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Finding the Fourth Proportional to 238,029.16, 357,048.90 and 86,239.78

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Solution

The fourth proportional to 238,029.16, 357,048.90 and 86,239.78 is: 129,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,029.16 : 357,048.90 = 86,239.78 : x
  2. Step 2: Convert to fraction form
    238,029.16/357,048.90 = 86,239.78/x
  3. Step 3: Cross multiply
    238,029.16x = 357,048.90 × 86,239.78
  4. Step 4: Simplify right side
    238,029.16x = 30,791,818,585.24
  5. Step 5: Solve for x
    x = 30,791,818,585.24/238,029.16
  6. Step 6: Final answer
    x = 129,361.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.