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Finding the Fourth Proportional to 375,403.28, 563,159.82 and 109,129.20

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Solution

The fourth proportional to 375,403.28, 563,159.82 and 109,129.20 is: 163,709.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,403.28 : 563,159.82 = 109,129.20 : x
  2. Step 2: Convert to fraction form
    375,403.28/563,159.82 = 109,129.20/x
  3. Step 3: Cross multiply
    375,403.28x = 563,159.82 × 109,129.20
  4. Step 4: Simplify right side
    375,403.28x = 61,457,180,628.74
  5. Step 5: Solve for x
    x = 61,457,180,628.74/375,403.28
  6. Step 6: Final answer
    x = 163,709.76

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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.