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Finding the Fourth Proportional to 230,572.86, 318,192.40 and 128,594.94

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Solution

The fourth proportional to 230,572.86, 318,192.40 and 128,594.94 is: 177,462.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,572.86 : 318,192.40 = 128,594.94 : x
  2. Step 2: Convert to fraction form
    230,572.86/318,192.40 = 128,594.94/x
  3. Step 3: Cross multiply
    230,572.86x = 318,192.40 × 128,594.94
  4. Step 4: Simplify right side
    230,572.86x = 40,917,932,586.46
  5. Step 5: Solve for x
    x = 40,917,932,586.46/230,572.86
  6. Step 6: Final answer
    x = 177,462.05

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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.