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Finding the Fourth Proportional to 230,898.85, 318,637.08 and 128,925.90

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Solution

The fourth proportional to 230,898.85, 318,637.08 and 128,925.90 is: 177,915.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,898.85 : 318,637.08 = 128,925.90 : x
  2. Step 2: Convert to fraction form
    230,898.85/318,637.08 = 128,925.90/x
  3. Step 3: Cross multiply
    230,898.85x = 318,637.08 × 128,925.90
  4. Step 4: Simplify right side
    230,898.85x = 41,080,572,312.37
  5. Step 5: Solve for x
    x = 41,080,572,312.37/230,898.85
  6. Step 6: Final answer
    x = 177,915.88

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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.