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Finding the Fourth Proportional to 375,666.85, 518,419.10 and 203,589.74

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Solution

The fourth proportional to 375,666.85, 518,419.10 and 203,589.74 is: 280,953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,666.85 : 518,419.10 = 203,589.74 : x
  2. Step 2: Convert to fraction form
    375,666.85/518,419.10 = 203,589.74/x
  3. Step 3: Cross multiply
    375,666.85x = 518,419.10 × 203,589.74
  4. Step 4: Simplify right side
    375,666.85x = 105,544,809,780.03
  5. Step 5: Solve for x
    x = 105,544,809,780.03/375,666.85
  6. Step 6: Final answer
    x = 280,953.22

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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.