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Finding the Fourth Proportional to 402,769.40, 555,683.42 and 249,752.44

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Solution

The fourth proportional to 402,769.40, 555,683.42 and 249,752.44 is: 344,572.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,769.40 : 555,683.42 = 249,752.44 : x
  2. Step 2: Convert to fraction form
    402,769.40/555,683.42 = 249,752.44/x
  3. Step 3: Cross multiply
    402,769.40x = 555,683.42 × 249,752.44
  4. Step 4: Simplify right side
    402,769.40x = 138,783,290,012.55
  5. Step 5: Solve for x
    x = 138,783,290,012.55/402,769.40
  6. Step 6: Final answer
    x = 344,572.58

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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.