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Finding the Fourth Proportional to 219,312.80, 328,450.80 and 148,810.40

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Solution

The fourth proportional to 219,312.80, 328,450.80 and 148,810.40 is: 222,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,312.80 : 328,450.80 = 148,810.40 : x
  2. Step 2: Convert to fraction form
    219,312.80/328,450.80 = 148,810.40/x
  3. Step 3: Cross multiply
    219,312.80x = 328,450.80 × 148,810.40
  4. Step 4: Simplify right side
    219,312.80x = 48,876,894,928.32
  5. Step 5: Solve for x
    x = 48,876,894,928.32/219,312.80
  6. Step 6: Final answer
    x = 222,863.85

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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.