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Finding the Fourth Proportional to 368,695.32, 553,257.66 and 155,449.86

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Solution

The fourth proportional to 368,695.32, 553,257.66 and 155,449.86 is: 233,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,695.32 : 553,257.66 = 155,449.86 : x
  2. Step 2: Convert to fraction form
    368,695.32/553,257.66 = 155,449.86/x
  3. Step 3: Cross multiply
    368,695.32x = 553,257.66 × 155,449.86
  4. Step 4: Simplify right side
    368,695.32x = 86,003,825,790.93
  5. Step 5: Solve for x
    x = 86,003,825,790.93/368,695.32
  6. Step 6: Final answer
    x = 233,265.30

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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.