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Finding the Fourth Proportional to 283,590.75, 391,363.47 and 156,274.56

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Solution

The fourth proportional to 283,590.75, 391,363.47 and 156,274.56 is: 215,663.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,590.75 : 391,363.47 = 156,274.56 : x
  2. Step 2: Convert to fraction form
    283,590.75/391,363.47 = 156,274.56/x
  3. Step 3: Cross multiply
    283,590.75x = 391,363.47 × 156,274.56
  4. Step 4: Simplify right side
    283,590.75x = 61,160,154,074.32
  5. Step 5: Solve for x
    x = 61,160,154,074.32/283,590.75
  6. Step 6: Final answer
    x = 215,663.43

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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.