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Finding the Fourth Proportional to 372,411.72, 513,965.88 and 219,499.11

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Solution

The fourth proportional to 372,411.72, 513,965.88 and 219,499.11 is: 302,931.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,411.72 : 513,965.88 = 219,499.11 : x
  2. Step 2: Convert to fraction form
    372,411.72/513,965.88 = 219,499.11/x
  3. Step 3: Cross multiply
    372,411.72x = 513,965.88 × 219,499.11
  4. Step 4: Simplify right side
    372,411.72x = 112,815,053,230.37
  5. Step 5: Solve for x
    x = 112,815,053,230.37/372,411.72
  6. Step 6: Final answer
    x = 302,931.00

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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.