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Finding the Fourth Proportional to 230,686.61, 318,347.57 and 130,084.61

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Solution

The fourth proportional to 230,686.61, 318,347.57 and 130,084.61 is: 179,516.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,686.61 : 318,347.57 = 130,084.61 : x
  2. Step 2: Convert to fraction form
    230,686.61/318,347.57 = 130,084.61/x
  3. Step 3: Cross multiply
    230,686.61x = 318,347.57 × 130,084.61
  4. Step 4: Simplify right side
    230,686.61x = 41,412,118,837.47
  5. Step 5: Solve for x
    x = 41,412,118,837.47/230,686.61
  6. Step 6: Final answer
    x = 179,516.79

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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.