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Finding the Fourth Proportional to 528,520.62, 729,358.95 and 302,170.86

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Solution

The fourth proportional to 528,520.62, 729,358.95 and 302,170.86 is: 416,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,520.62 : 729,358.95 = 302,170.86 : x
  2. Step 2: Convert to fraction form
    528,520.62/729,358.95 = 302,170.86/x
  3. Step 3: Cross multiply
    528,520.62x = 729,358.95 × 302,170.86
  4. Step 4: Simplify right side
    528,520.62x = 220,391,021,170.20
  5. Step 5: Solve for x
    x = 220,391,021,170.20/528,520.62
  6. Step 6: Final answer
    x = 416,996.07

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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.