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Finding the Fourth Proportional to 478,034.87, 716,896.78 and 158,126.58

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Solution

The fourth proportional to 478,034.87, 716,896.78 and 158,126.58 is: 237,138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,034.87 : 716,896.78 = 158,126.58 : x
  2. Step 2: Convert to fraction form
    478,034.87/716,896.78 = 158,126.58/x
  3. Step 3: Cross multiply
    478,034.87x = 716,896.78 × 158,126.58
  4. Step 4: Simplify right side
    478,034.87x = 113,360,435,639.10
  5. Step 5: Solve for x
    x = 113,360,435,639.10/478,034.87
  6. Step 6: Final answer
    x = 237,138.43

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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.