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Finding the Fourth Proportional to 230,681.76, 345,721.20 and 118,266.72

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Solution

The fourth proportional to 230,681.76, 345,721.20 and 118,266.72 is: 177,245.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,681.76 : 345,721.20 = 118,266.72 : x
  2. Step 2: Convert to fraction form
    230,681.76/345,721.20 = 118,266.72/x
  3. Step 3: Cross multiply
    230,681.76x = 345,721.20 × 118,266.72
  4. Step 4: Simplify right side
    230,681.76x = 40,887,312,358.46
  5. Step 5: Solve for x
    x = 40,887,312,358.46/230,681.76
  6. Step 6: Final answer
    x = 177,245.54

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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.