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Finding the Fourth Proportional to 478,233.32, 717,444.58 and 136,679.82

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Solution

The fourth proportional to 478,233.32, 717,444.58 and 136,679.82 is: 205,046.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,233.32 : 717,444.58 = 136,679.82 : x
  2. Step 2: Convert to fraction form
    478,233.32/717,444.58 = 136,679.82/x
  3. Step 3: Cross multiply
    478,233.32x = 717,444.58 × 136,679.82
  4. Step 4: Simplify right side
    478,233.32x = 98,060,196,054.38
  5. Step 5: Solve for x
    x = 98,060,196,054.38/478,233.32
  6. Step 6: Final answer
    x = 205,046.77

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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.