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Finding the Fourth Proportional to 219,314.80, 328,453.80 and 148,812.40

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Solution

The fourth proportional to 219,314.80, 328,453.80 and 148,812.40 is: 222,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,314.80 : 328,453.80 = 148,812.40 : x
  2. Step 2: Convert to fraction form
    219,314.80/328,453.80 = 148,812.40/x
  3. Step 3: Cross multiply
    219,314.80x = 328,453.80 × 148,812.40
  4. Step 4: Simplify right side
    219,314.80x = 48,877,998,267.12
  5. Step 5: Solve for x
    x = 48,877,998,267.12/219,314.80
  6. Step 6: Final answer
    x = 222,866.85

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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.