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Finding the Fourth Proportional to 230,510.78, 318,108.81 and 127,156.85

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Solution

The fourth proportional to 230,510.78, 318,108.81 and 127,156.85 is: 175,478.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,510.78 : 318,108.81 = 127,156.85 : x
  2. Step 2: Convert to fraction form
    230,510.78/318,108.81 = 127,156.85/x
  3. Step 3: Cross multiply
    230,510.78x = 318,108.81 × 127,156.85
  4. Step 4: Simplify right side
    230,510.78x = 40,449,714,236.85
  5. Step 5: Solve for x
    x = 40,449,714,236.85/230,510.78
  6. Step 6: Final answer
    x = 175,478.62

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1.5x scale

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.