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Finding the Fourth Proportional to 249,630.80, 374,446.20 and 72,143.60

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Solution

The fourth proportional to 249,630.80, 374,446.20 and 72,143.60 is: 108,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,630.80 : 374,446.20 = 72,143.60 : x
  2. Step 2: Convert to fraction form
    249,630.80/374,446.20 = 72,143.60/x
  3. Step 3: Cross multiply
    249,630.80x = 374,446.20 × 72,143.60
  4. Step 4: Simplify right side
    249,630.80x = 27,013,896,874.32
  5. Step 5: Solve for x
    x = 27,013,896,874.32/249,630.80
  6. Step 6: Final answer
    x = 108,215.40

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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.