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Finding the Fourth Proportional to 188,435.40, 282,653.10 and 187,123.20

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Solution

The fourth proportional to 188,435.40, 282,653.10 and 187,123.20 is: 280,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,435.40 : 282,653.10 = 187,123.20 : x
  2. Step 2: Convert to fraction form
    188,435.40/282,653.10 = 187,123.20/x
  3. Step 3: Cross multiply
    188,435.40x = 282,653.10 × 187,123.20
  4. Step 4: Simplify right side
    188,435.40x = 52,890,952,561.92
  5. Step 5: Solve for x
    x = 52,890,952,561.92/188,435.40
  6. Step 6: Final answer
    x = 280,684.80

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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.