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Finding the Fourth Proportional to 282,316.80, 423,086.40 and 187,276.80

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Solution

The fourth proportional to 282,316.80, 423,086.40 and 187,276.80 is: 280,657.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,316.80 : 423,086.40 = 187,276.80 : x
  2. Step 2: Convert to fraction form
    282,316.80/423,086.40 = 187,276.80/x
  3. Step 3: Cross multiply
    282,316.80x = 423,086.40 × 187,276.80
  4. Step 4: Simplify right side
    282,316.80x = 79,234,267,115.52
  5. Step 5: Solve for x
    x = 79,234,267,115.52/282,316.80
  6. Step 6: Final answer
    x = 280,657.29

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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.