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Finding the Fourth Proportional to 283,802.28, 391,649.82 and 156,482.40

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Solution

The fourth proportional to 283,802.28, 391,649.82 and 156,482.40 is: 215,947.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,802.28 : 391,649.82 = 156,482.40 : x
  2. Step 2: Convert to fraction form
    283,802.28/391,649.82 = 156,482.40/x
  3. Step 3: Cross multiply
    283,802.28x = 391,649.82 × 156,482.40
  4. Step 4: Simplify right side
    283,802.28x = 61,286,303,793.17
  5. Step 5: Solve for x
    x = 61,286,303,793.17/283,802.28
  6. Step 6: Final answer
    x = 215,947.19

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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.