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Finding the Fourth Proportional to 265,447,613.70, 398,171,420.55 and 220,097,981.70

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Solution

The fourth proportional to 265,447,613.70, 398,171,420.55 and 220,097,981.70 is: 330,146,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,447,613.70 : 398,171,420.55 = 220,097,981.70 : x
  2. Step 2: Convert to fraction form
    265,447,613.70/398,171,420.55 = 220,097,981.70/x
  3. Step 3: Cross multiply
    265,447,613.70x = 398,171,420.55 × 220,097,981.70
  4. Step 4: Simplify right side
    265,447,613.70x = 87,636,726,033,676,896
  5. Step 5: Solve for x
    x = 87,636,726,033,676,896/265,447,613.70
  6. Step 6: Final answer
    x = 330,146,972.55

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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.