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Finding the Fourth Proportional to 438,695.64, 658,040.76 and 123,152.76

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Solution

The fourth proportional to 438,695.64, 658,040.76 and 123,152.76 is: 184,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,695.64 : 658,040.76 = 123,152.76 : x
  2. Step 2: Convert to fraction form
    438,695.64/658,040.76 = 123,152.76/x
  3. Step 3: Cross multiply
    438,695.64x = 658,040.76 × 123,152.76
  4. Step 4: Simplify right side
    438,695.64x = 81,039,535,786.50
  5. Step 5: Solve for x
    x = 81,039,535,786.50/438,695.64
  6. Step 6: Final answer
    x = 184,728.38

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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.