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Finding the Fourth Proportional to 218,854.40, 328,281.52 and 169,007.20

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Solution

The fourth proportional to 218,854.40, 328,281.52 and 169,007.20 is: 253,510.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,854.40 : 328,281.52 = 169,007.20 : x
  2. Step 2: Convert to fraction form
    218,854.40/328,281.52 = 169,007.20/x
  3. Step 3: Cross multiply
    218,854.40x = 328,281.52 × 169,007.20
  4. Step 4: Simplify right side
    218,854.40x = 55,481,940,506.94
  5. Step 5: Solve for x
    x = 55,481,940,506.94/218,854.40
  6. Step 6: Final answer
    x = 253,510.74

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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.