Home / 266,465,920.20-399,698,880.30-72,401,381.70

Finding the Fourth Proportional to 266,465,920.20, 399,698,880.30 and 72,401,381.70

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Solution

The fourth proportional to 266,465,920.20, 399,698,880.30 and 72,401,381.70 is: 108,602,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,465,920.20 : 399,698,880.30 = 72,401,381.70 : x
  2. Step 2: Convert to fraction form
    266,465,920.20/399,698,880.30 = 72,401,381.70/x
  3. Step 3: Cross multiply
    266,465,920.20x = 399,698,880.30 × 72,401,381.70
  4. Step 4: Simplify right side
    266,465,920.20x = 28,938,751,197,662,912
  5. Step 5: Solve for x
    x = 28,938,751,197,662,912/266,465,920.20
  6. Step 6: Final answer
    x = 108,602,072.55

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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.