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Finding the Fourth Proportional to 283,803.80, 391,651.88 and 156,483.92

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Solution

The fourth proportional to 283,803.80, 391,651.88 and 156,483.92 is: 215,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,803.80 : 391,651.88 = 156,483.92 : x
  2. Step 2: Convert to fraction form
    283,803.80/391,651.88 = 156,483.92/x
  3. Step 3: Cross multiply
    283,803.80x = 391,651.88 × 156,483.92
  4. Step 4: Simplify right side
    283,803.80x = 61,287,221,457.77
  5. Step 5: Solve for x
    x = 61,287,221,457.77/283,803.80
  6. Step 6: Final answer
    x = 215,949.26

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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.