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Finding the Fourth Proportional to 283,800.16, 391,646.87 and 156,480.28

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Solution

The fourth proportional to 283,800.16, 391,646.87 and 156,480.28 is: 215,944.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,800.16 : 391,646.87 = 156,480.28 : x
  2. Step 2: Convert to fraction form
    283,800.16/391,646.87 = 156,480.28/x
  3. Step 3: Cross multiply
    283,800.16x = 391,646.87 × 156,480.28
  4. Step 4: Simplify right side
    283,800.16x = 61,285,011,878.72
  5. Step 5: Solve for x
    x = 61,285,011,878.72/283,800.16
  6. Step 6: Final answer
    x = 215,944.25

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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.