Home / 278,123.14-383,807.60-157,288.16

Finding the Fourth Proportional to 278,123.14, 383,807.60 and 157,288.16

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Solution

The fourth proportional to 278,123.14, 383,807.60 and 157,288.16 is: 217,056.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,123.14 : 383,807.60 = 157,288.16 : x
  2. Step 2: Convert to fraction form
    278,123.14/383,807.60 = 157,288.16/x
  3. Step 3: Cross multiply
    278,123.14x = 383,807.60 × 157,288.16
  4. Step 4: Simplify right side
    278,123.14x = 60,368,391,198.02
  5. Step 5: Solve for x
    x = 60,368,391,198.02/278,123.14
  6. Step 6: Final answer
    x = 217,056.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.