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Finding the Fourth Proportional to 285,502.40, 428,253.60 and 179,979.20

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Solution

The fourth proportional to 285,502.40, 428,253.60 and 179,979.20 is: 269,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,502.40 : 428,253.60 = 179,979.20 : x
  2. Step 2: Convert to fraction form
    285,502.40/428,253.60 = 179,979.20/x
  3. Step 3: Cross multiply
    285,502.40x = 428,253.60 × 179,979.20
  4. Step 4: Simplify right side
    285,502.40x = 77,076,740,325.12
  5. Step 5: Solve for x
    x = 77,076,740,325.12/285,502.40
  6. Step 6: Final answer
    x = 269,968.80

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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.