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Finding the Fourth Proportional to 286,233.15, 429,349.73 and 73,000.65

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Solution

The fourth proportional to 286,233.15, 429,349.73 and 73,000.65 is: 109,500.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,233.15 : 429,349.73 = 73,000.65 : x
  2. Step 2: Convert to fraction form
    286,233.15/429,349.73 = 73,000.65/x
  3. Step 3: Cross multiply
    286,233.15x = 429,349.73 × 73,000.65
  4. Step 4: Simplify right side
    286,233.15x = 31,342,809,002.32
  5. Step 5: Solve for x
    x = 31,342,809,002.32/286,233.15
  6. Step 6: Final answer
    x = 109,500.98

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Double scale
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Similar ratio
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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.