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Finding the Fourth Proportional to 219,315.30, 328,454.55 and 148,812.90

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Solution

The fourth proportional to 219,315.30, 328,454.55 and 148,812.90 is: 222,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,315.30 : 328,454.55 = 148,812.90 : x
  2. Step 2: Convert to fraction form
    219,315.30/328,454.55 = 148,812.90/x
  3. Step 3: Cross multiply
    219,315.30x = 328,454.55 × 148,812.90
  4. Step 4: Simplify right side
    219,315.30x = 48,878,274,103.70
  5. Step 5: Solve for x
    x = 48,878,274,103.70/219,315.30
  6. Step 6: Final answer
    x = 222,867.60

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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.