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Finding the Fourth Proportional to 438,830.20, 658,245.30 and 249,217.30

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Solution

The fourth proportional to 438,830.20, 658,245.30 and 249,217.30 is: 373,825.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,830.20 : 658,245.30 = 249,217.30 : x
  2. Step 2: Convert to fraction form
    438,830.20/658,245.30 = 249,217.30/x
  3. Step 3: Cross multiply
    438,830.20x = 658,245.30 × 249,217.30
  4. Step 4: Simplify right side
    438,830.20x = 164,046,116,403.69
  5. Step 5: Solve for x
    x = 164,046,116,403.69/438,830.20
  6. Step 6: Final answer
    x = 373,825.95

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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.