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Finding the Fourth Proportional to 375,521.82, 518,219.50 and 203,444.16

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Solution

The fourth proportional to 375,521.82, 518,219.50 and 203,444.16 is: 280,752.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,521.82 : 518,219.50 = 203,444.16 : x
  2. Step 2: Convert to fraction form
    375,521.82/518,219.50 = 203,444.16/x
  3. Step 3: Cross multiply
    375,521.82x = 518,219.50 × 203,444.16
  4. Step 4: Simplify right side
    375,521.82x = 105,428,732,677.28
  5. Step 5: Solve for x
    x = 105,428,732,677.28/375,521.82
  6. Step 6: Final answer
    x = 280,752.62

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1.5x scale

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.