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Finding the Fourth Proportional to 250,624.78, 345,862.66 and 137,448.34

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Solution

The fourth proportional to 250,624.78, 345,862.66 and 137,448.34 is: 189,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,624.78 : 345,862.66 = 137,448.34 : x
  2. Step 2: Convert to fraction form
    250,624.78/345,862.66 = 137,448.34/x
  3. Step 3: Cross multiply
    250,624.78x = 345,862.66 × 137,448.34
  4. Step 4: Simplify right side
    250,624.78x = 47,538,248,484.98
  5. Step 5: Solve for x
    x = 47,538,248,484.98/250,624.78
  6. Step 6: Final answer
    x = 189,678.96

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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.