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Finding the Fourth Proportional to 424,921.64, 637,384.02 and 158,679.32

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Solution

The fourth proportional to 424,921.64, 637,384.02 and 158,679.32 is: 238,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,921.64 : 637,384.02 = 158,679.32 : x
  2. Step 2: Convert to fraction form
    424,921.64/637,384.02 = 158,679.32/x
  3. Step 3: Cross multiply
    424,921.64x = 637,384.02 × 158,679.32
  4. Step 4: Simplify right side
    424,921.64x = 101,139,662,872.47
  5. Step 5: Solve for x
    x = 101,139,662,872.47/424,921.64
  6. Step 6: Final answer
    x = 238,019.56

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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.