Home / 261,055,893,129.40-391,583,839,694.10-72,401,424,009.40

Finding the Fourth Proportional to 261,055,893,129.40, 391,583,839,694.10 and 72,401,424,009.40

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Solution

The fourth proportional to 261,055,893,129.40, 391,583,839,694.10 and 72,401,424,009.40 is: 108,602,136,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,055,893,129.40 : 391,583,839,694.10 = 72,401,424,009.40 : x
  2. Step 2: Convert to fraction form
    261,055,893,129.40/391,583,839,694.10 = 72,401,424,009.40/x
  3. Step 3: Cross multiply
    261,055,893,129.40x = 391,583,839,694.10 × 72,401,424,009.40
  4. Step 4: Simplify right side
    261,055,893,129.40x = 28,351,227,612,921,447,055,360
  5. Step 5: Solve for x
    x = 28,351,227,612,921,447,055,360/261,055,893,129.40
  6. Step 6: Final answer
    x = 108,602,136,014.10

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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.