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Finding the Fourth Proportional to 286,179.73, 429,278.72 and 143,947.33

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Solution

The fourth proportional to 286,179.73, 429,278.72 and 143,947.33 is: 215,925.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,179.73 : 429,278.72 = 143,947.33 : x
  2. Step 2: Convert to fraction form
    286,179.73/429,278.72 = 143,947.33/x
  3. Step 3: Cross multiply
    286,179.73x = 429,278.72 × 143,947.33
  4. Step 4: Simplify right side
    286,179.73x = 61,793,523,776.88
  5. Step 5: Solve for x
    x = 61,793,523,776.88/286,179.73
  6. Step 6: Final answer
    x = 215,925.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.