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Finding the Fourth Proportional to 250,505.76, 345,695.04 and 137,328.48

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Solution

The fourth proportional to 250,505.76, 345,695.04 and 137,328.48 is: 189,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,505.76 : 345,695.04 = 137,328.48 : x
  2. Step 2: Convert to fraction form
    250,505.76/345,695.04 = 137,328.48/x
  3. Step 3: Cross multiply
    250,505.76x = 345,695.04 × 137,328.48
  4. Step 4: Simplify right side
    250,505.76x = 47,473,774,386.74
  5. Step 5: Solve for x
    x = 47,473,774,386.74/250,505.76
  6. Step 6: Final answer
    x = 189,511.71

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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.