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Finding the Fourth Proportional to 438,440.30, 657,660.45 and 122,950.70

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Solution

The fourth proportional to 438,440.30, 657,660.45 and 122,950.70 is: 184,426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,440.30 : 657,660.45 = 122,950.70 : x
  2. Step 2: Convert to fraction form
    438,440.30/657,660.45 = 122,950.70/x
  3. Step 3: Cross multiply
    438,440.30x = 657,660.45 × 122,950.70
  4. Step 4: Simplify right side
    438,440.30x = 80,859,812,689.82
  5. Step 5: Solve for x
    x = 80,859,812,689.82/438,440.30
  6. Step 6: Final answer
    x = 184,426.05

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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.