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Finding the Fourth Proportional to 347,358.60, 521,037.90 and 147,612.60

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Solution

The fourth proportional to 347,358.60, 521,037.90 and 147,612.60 is: 221,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,358.60 : 521,037.90 = 147,612.60 : x
  2. Step 2: Convert to fraction form
    347,358.60/521,037.90 = 147,612.60/x
  3. Step 3: Cross multiply
    347,358.60x = 521,037.90 × 147,612.60
  4. Step 4: Simplify right side
    347,358.60x = 76,911,759,117.54
  5. Step 5: Solve for x
    x = 76,911,759,117.54/347,358.60
  6. Step 6: Final answer
    x = 221,418.90

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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.