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Finding the Fourth Proportional to 347,101.80, 520,701.30 and 147,420.60

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Solution

The fourth proportional to 347,101.80, 520,701.30 and 147,420.60 is: 221,151.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,101.80 : 520,701.30 = 147,420.60 : x
  2. Step 2: Convert to fraction form
    347,101.80/520,701.30 = 147,420.60/x
  3. Step 3: Cross multiply
    347,101.80x = 520,701.30 × 147,420.60
  4. Step 4: Simplify right side
    347,101.80x = 76,762,098,066.78
  5. Step 5: Solve for x
    x = 76,762,098,066.78/347,101.80
  6. Step 6: Final answer
    x = 221,151.54

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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.