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Finding the Fourth Proportional to 389,622.30, 584,433.45 and 249,654.30

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Solution

The fourth proportional to 389,622.30, 584,433.45 and 249,654.30 is: 374,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,622.30 : 584,433.45 = 249,654.30 : x
  2. Step 2: Convert to fraction form
    389,622.30/584,433.45 = 249,654.30/x
  3. Step 3: Cross multiply
    389,622.30x = 584,433.45 × 249,654.30
  4. Step 4: Simplify right side
    389,622.30x = 145,906,323,856.34
  5. Step 5: Solve for x
    x = 145,906,323,856.34/389,622.30
  6. Step 6: Final answer
    x = 374,481.45

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1.5x scale

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.