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Finding the Fourth Proportional to 372,440.40, 514,023.10 and 219,429.68

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Solution

The fourth proportional to 372,440.40, 514,023.10 and 219,429.68 is: 302,845.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,440.40 : 514,023.10 = 219,429.68 : x
  2. Step 2: Convert to fraction form
    372,440.40/514,023.10 = 219,429.68/x
  3. Step 3: Cross multiply
    372,440.40x = 514,023.10 × 219,429.68
  4. Step 4: Simplify right side
    372,440.40x = 112,791,921,226.92
  5. Step 5: Solve for x
    x = 112,791,921,226.92/372,440.40
  6. Step 6: Final answer
    x = 302,845.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.