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Finding the Fourth Proportional to 375,156.96, 561,405.36 and 330,870

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Solution

The fourth proportional to 375,156.96, 561,405.36 and 330,870 is: 495,131.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,156.96 : 561,405.36 = 330,870 : x
  2. Step 2: Convert to fraction form
    375,156.96/561,405.36 = 330,870/x
  3. Step 3: Cross multiply
    375,156.96x = 561,405.36 × 330,870
  4. Step 4: Simplify right side
    375,156.96x = 185,752,191,463.20
  5. Step 5: Solve for x
    x = 185,752,191,463.20/375,156.96
  6. Step 6: Final answer
    x = 495,131.93

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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.