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Finding the Fourth Proportional to 424,803.42, 637,190.28 and 125,288.64

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Solution

The fourth proportional to 424,803.42, 637,190.28 and 125,288.64 is: 187,928.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,803.42 : 637,190.28 = 125,288.64 : x
  2. Step 2: Convert to fraction form
    424,803.42/637,190.28 = 125,288.64/x
  3. Step 3: Cross multiply
    424,803.42x = 637,190.28 × 125,288.64
  4. Step 4: Simplify right side
    424,803.42x = 79,832,703,602.42
  5. Step 5: Solve for x
    x = 79,832,703,602.42/424,803.42
  6. Step 6: Final answer
    x = 187,928.58

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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.