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Finding the Fourth Proportional to 347,321, 521,049.18 and 147,639.08

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Solution

The fourth proportional to 347,321, 521,049.18 and 147,639.08 is: 221,487.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,321 : 521,049.18 = 147,639.08 : x
  2. Step 2: Convert to fraction form
    347,321/521,049.18 = 147,639.08/x
  3. Step 3: Cross multiply
    347,321x = 521,049.18 × 147,639.08
  4. Step 4: Simplify right side
    347,321x = 76,927,221,569.95
  5. Step 5: Solve for x
    x = 76,927,221,569.95/347,321
  6. Step 6: Final answer
    x = 221,487.39

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1.5x scale

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.