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Finding the Fourth Proportional to 344,903.20, 517,945.20 and 187,439.20

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Solution

The fourth proportional to 344,903.20, 517,945.20 and 187,439.20 is: 281,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,903.20 : 517,945.20 = 187,439.20 : x
  2. Step 2: Convert to fraction form
    344,903.20/517,945.20 = 187,439.20/x
  3. Step 3: Cross multiply
    344,903.20x = 517,945.20 × 187,439.20
  4. Step 4: Simplify right side
    344,903.20x = 97,083,233,931.84
  5. Step 5: Solve for x
    x = 97,083,233,931.84/344,903.20
  6. Step 6: Final answer
    x = 281,479.66

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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.