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Finding the Fourth Proportional to 239,477.92, 330,443.55 and 137,507.83

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Solution

The fourth proportional to 239,477.92, 330,443.55 and 137,507.83 is: 189,740.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,477.92 : 330,443.55 = 137,507.83 : x
  2. Step 2: Convert to fraction form
    239,477.92/330,443.55 = 137,507.83/x
  3. Step 3: Cross multiply
    239,477.92x = 330,443.55 × 137,507.83
  4. Step 4: Simplify right side
    239,477.92x = 45,438,574,671.89
  5. Step 5: Solve for x
    x = 45,438,574,671.89/239,477.92
  6. Step 6: Final answer
    x = 189,740.14

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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.