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Finding the Fourth Proportional to 347,405.60, 521,108.40 and 147,675.80

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Solution

The fourth proportional to 347,405.60, 521,108.40 and 147,675.80 is: 221,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,405.60 : 521,108.40 = 147,675.80 : x
  2. Step 2: Convert to fraction form
    347,405.60/521,108.40 = 147,675.80/x
  3. Step 3: Cross multiply
    347,405.60x = 521,108.40 × 147,675.80
  4. Step 4: Simplify right side
    347,405.60x = 76,955,099,856.72
  5. Step 5: Solve for x
    x = 76,955,099,856.72/347,405.60
  6. Step 6: Final answer
    x = 221,513.70

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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.