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Finding the Fourth Proportional to 438,963.40, 658,663.80 and 249,569.20

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Solution

The fourth proportional to 438,963.40, 658,663.80 and 249,569.20 is: 374,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,963.40 : 658,663.80 = 249,569.20 : x
  2. Step 2: Convert to fraction form
    438,963.40/658,663.80 = 249,569.20/x
  3. Step 3: Cross multiply
    438,963.40x = 658,663.80 × 249,569.20
  4. Step 4: Simplify right side
    438,963.40x = 164,382,197,634.96
  5. Step 5: Solve for x
    x = 164,382,197,634.96/438,963.40
  6. Step 6: Final answer
    x = 374,478.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.