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Finding the Fourth Proportional to 402,746.40, 555,651.72 and 249,729.51

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Solution

The fourth proportional to 402,746.40, 555,651.72 and 249,729.51 is: 344,540.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,746.40 : 555,651.72 = 249,729.51 : x
  2. Step 2: Convert to fraction form
    402,746.40/555,651.72 = 249,729.51/x
  3. Step 3: Cross multiply
    402,746.40x = 555,651.72 × 249,729.51
  4. Step 4: Simplify right side
    402,746.40x = 138,762,631,766.26
  5. Step 5: Solve for x
    x = 138,762,631,766.26/402,746.40
  6. Step 6: Final answer
    x = 344,540.96

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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.