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Finding the Fourth Proportional to 389,350.40, 584,025.60 and 152,700.80

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Solution

The fourth proportional to 389,350.40, 584,025.60 and 152,700.80 is: 229,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,350.40 : 584,025.60 = 152,700.80 : x
  2. Step 2: Convert to fraction form
    389,350.40/584,025.60 = 152,700.80/x
  3. Step 3: Cross multiply
    389,350.40x = 584,025.60 × 152,700.80
  4. Step 4: Simplify right side
    389,350.40x = 89,181,176,340.48
  5. Step 5: Solve for x
    x = 89,181,176,340.48/389,350.40
  6. Step 6: Final answer
    x = 229,051.20

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Similar ratio
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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.