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Finding the Fourth Proportional to 438,940.40, 658,629.30 and 249,546.20

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Solution

The fourth proportional to 438,940.40, 658,629.30 and 249,546.20 is: 374,443.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,940.40 : 658,629.30 = 249,546.20 : x
  2. Step 2: Convert to fraction form
    438,940.40/658,629.30 = 249,546.20/x
  3. Step 3: Cross multiply
    438,940.40x = 658,629.30 × 249,546.20
  4. Step 4: Simplify right side
    438,940.40x = 164,358,439,023.66
  5. Step 5: Solve for x
    x = 164,358,439,023.66/438,940.40
  6. Step 6: Final answer
    x = 374,443.64

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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.