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Finding the Fourth Proportional to 393,117.55, 542,331.45 and 249,800.69

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Solution

The fourth proportional to 393,117.55, 542,331.45 and 249,800.69 is: 344,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,117.55 : 542,331.45 = 249,800.69 : x
  2. Step 2: Convert to fraction form
    393,117.55/542,331.45 = 249,800.69/x
  3. Step 3: Cross multiply
    393,117.55x = 542,331.45 × 249,800.69
  4. Step 4: Simplify right side
    393,117.55x = 135,474,771,774.53
  5. Step 5: Solve for x
    x = 135,474,771,774.53/393,117.55
  6. Step 6: Final answer
    x = 344,616.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.