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Finding the Fourth Proportional to 283,598.87, 391,374.63 and 156,282.66

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Solution

The fourth proportional to 283,598.87, 391,374.63 and 156,282.66 is: 215,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,598.87 : 391,374.63 = 156,282.66 : x
  2. Step 2: Convert to fraction form
    283,598.87/391,374.63 = 156,282.66/x
  3. Step 3: Cross multiply
    283,598.87x = 391,374.63 × 156,282.66
  4. Step 4: Simplify right side
    283,598.87x = 61,165,068,232.92
  5. Step 5: Solve for x
    x = 61,165,068,232.92/283,598.87
  6. Step 6: Final answer
    x = 215,674.59

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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.