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Finding the Fourth Proportional to 283,621.91, 391,498.52 and 253,354.64

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Solution

The fourth proportional to 283,621.91, 391,498.52 and 253,354.64 is: 349,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,621.91 : 391,498.52 = 253,354.64 : x
  2. Step 2: Convert to fraction form
    283,621.91/391,498.52 = 253,354.64/x
  3. Step 3: Cross multiply
    283,621.91x = 391,498.52 × 253,354.64
  4. Step 4: Simplify right side
    283,621.91x = 99,187,963,370.87
  5. Step 5: Solve for x
    x = 99,187,963,370.87/283,621.91
  6. Step 6: Final answer
    x = 349,718.98

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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.