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Finding the Fourth Proportional to 160,499.28, 240,785.40 and 85,579.92

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Solution

The fourth proportional to 160,499.28, 240,785.40 and 85,579.92 is: 128,389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,499.28 : 240,785.40 = 85,579.92 : x
  2. Step 2: Convert to fraction form
    160,499.28/240,785.40 = 85,579.92/x
  3. Step 3: Cross multiply
    160,499.28x = 240,785.40 × 85,579.92
  4. Step 4: Simplify right side
    160,499.28x = 20,606,395,269.17
  5. Step 5: Solve for x
    x = 20,606,395,269.17/160,499.28
  6. Step 6: Final answer
    x = 128,389.33

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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.