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Finding the Fourth Proportional to 347,875.60, 521,122.20 and 189,821.20

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Solution

The fourth proportional to 347,875.60, 521,122.20 and 189,821.20 is: 284,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,875.60 : 521,122.20 = 189,821.20 : x
  2. Step 2: Convert to fraction form
    347,875.60/521,122.20 = 189,821.20/x
  3. Step 3: Cross multiply
    347,875.60x = 521,122.20 × 189,821.20
  4. Step 4: Simplify right side
    347,875.60x = 98,920,041,350.64
  5. Step 5: Solve for x
    x = 98,920,041,350.64/347,875.60
  6. Step 6: Final answer
    x = 284,354.64

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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.