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Finding the Fourth Proportional to 286,265.70, 429,595.31 and 99,277.20

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Solution

The fourth proportional to 286,265.70, 429,595.31 and 99,277.20 is: 148,984.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,265.70 : 429,595.31 = 99,277.20 : x
  2. Step 2: Convert to fraction form
    286,265.70/429,595.31 = 99,277.20/x
  3. Step 3: Cross multiply
    286,265.70x = 429,595.31 × 99,277.20
  4. Step 4: Simplify right side
    286,265.70x = 42,649,019,758.13
  5. Step 5: Solve for x
    x = 42,649,019,758.13/286,265.70
  6. Step 6: Final answer
    x = 148,984.04

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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.