Home / 261,055,899,197.40-391,583,848,796.10-72,401,430,077.40

Finding the Fourth Proportional to 261,055,899,197.40, 391,583,848,796.10 and 72,401,430,077.40

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Solution

The fourth proportional to 261,055,899,197.40, 391,583,848,796.10 and 72,401,430,077.40 is: 108,602,145,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,055,899,197.40 : 391,583,848,796.10 = 72,401,430,077.40 : x
  2. Step 2: Convert to fraction form
    261,055,899,197.40/391,583,848,796.10 = 72,401,430,077.40/x
  3. Step 3: Cross multiply
    261,055,899,197.40x = 391,583,848,796.10 × 72,401,430,077.40
  4. Step 4: Simplify right side
    261,055,899,197.40x = 28,351,230,648,050,004,262,912
  5. Step 5: Solve for x
    x = 28,351,230,648,050,004,262,912/261,055,899,197.40
  6. Step 6: Final answer
    x = 108,602,145,116.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.