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Finding the Fourth Proportional to 324,716.40, 487,074.60 and 147,569.40

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Solution

The fourth proportional to 324,716.40, 487,074.60 and 147,569.40 is: 221,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,716.40 : 487,074.60 = 147,569.40 : x
  2. Step 2: Convert to fraction form
    324,716.40/487,074.60 = 147,569.40/x
  3. Step 3: Cross multiply
    324,716.40x = 487,074.60 × 147,569.40
  4. Step 4: Simplify right side
    324,716.40x = 71,877,306,477.24
  5. Step 5: Solve for x
    x = 71,877,306,477.24/324,716.40
  6. Step 6: Final answer
    x = 221,354.10

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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.