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Finding the Fourth Proportional to 230,612.55, 318,124.31 and 187,640.03

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Solution

The fourth proportional to 230,612.55, 318,124.31 and 187,640.03 is: 258,844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,612.55 : 318,124.31 = 187,640.03 : x
  2. Step 2: Convert to fraction form
    230,612.55/318,124.31 = 187,640.03/x
  3. Step 3: Cross multiply
    230,612.55x = 318,124.31 × 187,640.03
  4. Step 4: Simplify right side
    230,612.55x = 59,692,852,543.31
  5. Step 5: Solve for x
    x = 59,692,852,543.31/230,612.55
  6. Step 6: Final answer
    x = 258,844.77

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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.