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Finding the Fourth Proportional to 402,739.26, 555,641.88 and 249,722.39

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Solution

The fourth proportional to 402,739.26, 555,641.88 and 249,722.39 is: 344,531.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,739.26 : 555,641.88 = 249,722.39 : x
  2. Step 2: Convert to fraction form
    402,739.26/555,641.88 = 249,722.39/x
  3. Step 3: Cross multiply
    402,739.26x = 555,641.88 × 249,722.39
  4. Step 4: Simplify right side
    402,739.26x = 138,756,215,479.48
  5. Step 5: Solve for x
    x = 138,756,215,479.48/402,739.26
  6. Step 6: Final answer
    x = 344,531.14

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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.