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Finding the Fourth Proportional to 402,770.40, 555,684.72 and 249,753.60

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Solution

The fourth proportional to 402,770.40, 555,684.72 and 249,753.60 is: 344,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,770.40 : 555,684.72 = 249,753.60 : x
  2. Step 2: Convert to fraction form
    402,770.40/555,684.72 = 249,753.60/x
  3. Step 3: Cross multiply
    402,770.40x = 555,684.72 × 249,753.60
  4. Step 4: Simplify right side
    402,770.40x = 138,784,259,284.99
  5. Step 5: Solve for x
    x = 138,784,259,284.99/402,770.40
  6. Step 6: Final answer
    x = 344,574.13

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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.