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Finding the Fourth Proportional to 285,542.80, 428,314.20 and 152,832.40

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Solution

The fourth proportional to 285,542.80, 428,314.20 and 152,832.40 is: 229,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,542.80 : 428,314.20 = 152,832.40 : x
  2. Step 2: Convert to fraction form
    285,542.80/428,314.20 = 152,832.40/x
  3. Step 3: Cross multiply
    285,542.80x = 428,314.20 × 152,832.40
  4. Step 4: Simplify right side
    285,542.80x = 65,460,287,140.08
  5. Step 5: Solve for x
    x = 65,460,287,140.08/285,542.80
  6. Step 6: Final answer
    x = 229,248.60

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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.