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Finding the Fourth Proportional to 286,230.40, 429,345.60 and 72,997.90

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Solution

The fourth proportional to 286,230.40, 429,345.60 and 72,997.90 is: 109,496.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,230.40 : 429,345.60 = 72,997.90 : x
  2. Step 2: Convert to fraction form
    286,230.40/429,345.60 = 72,997.90/x
  3. Step 3: Cross multiply
    286,230.40x = 429,345.60 × 72,997.90
  4. Step 4: Simplify right side
    286,230.40x = 31,341,327,174.24
  5. Step 5: Solve for x
    x = 31,341,327,174.24/286,230.40
  6. Step 6: Final answer
    x = 109,496.85

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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.