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Finding the Fourth Proportional to 402,016.91, 555,042.96 and 249,218.39

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Solution

The fourth proportional to 402,016.91, 555,042.96 and 249,218.39 is: 344,082.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,016.91 : 555,042.96 = 249,218.39 : x
  2. Step 2: Convert to fraction form
    402,016.91/555,042.96 = 249,218.39/x
  3. Step 3: Cross multiply
    402,016.91x = 555,042.96 × 249,218.39
  4. Step 4: Simplify right side
    402,016.91x = 138,326,914,259.64
  5. Step 5: Solve for x
    x = 138,326,914,259.64/402,016.91
  6. Step 6: Final answer
    x = 344,082.33

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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.