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Finding the Fourth Proportional to 249,987,728.40, 374,869,618.20 and 113,602,909.20

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Solution

The fourth proportional to 249,987,728.40, 374,869,618.20 and 113,602,909.20 is: 170,353,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,987,728.40 : 374,869,618.20 = 113,602,909.20 : x
  2. Step 2: Convert to fraction form
    249,987,728.40/374,869,618.20 = 113,602,909.20/x
  3. Step 3: Cross multiply
    249,987,728.40x = 374,869,618.20 × 113,602,909.20
  4. Step 4: Simplify right side
    249,987,728.40x = 42,586,279,198,213,264
  5. Step 5: Solve for x
    x = 42,586,279,198,213,264/249,987,728.40
  6. Step 6: Final answer
    x = 170,353,478.83

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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.