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Finding the Fourth Proportional to 375,449.61, 518,120.99 and 203,369.45

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Solution

The fourth proportional to 375,449.61, 518,120.99 and 203,369.45 is: 280,650.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,449.61 : 518,120.99 = 203,369.45 : x
  2. Step 2: Convert to fraction form
    375,449.61/518,120.99 = 203,369.45/x
  3. Step 3: Cross multiply
    375,449.61x = 518,120.99 × 203,369.45
  4. Step 4: Simplify right side
    375,449.61x = 105,369,980,769.76
  5. Step 5: Solve for x
    x = 105,369,980,769.76/375,449.61
  6. Step 6: Final answer
    x = 280,650.13

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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.