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Finding the Fourth Proportional to 219,699.30, 329,548.95 and 144,920.10

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Solution

The fourth proportional to 219,699.30, 329,548.95 and 144,920.10 is: 217,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,699.30 : 329,548.95 = 144,920.10 : x
  2. Step 2: Convert to fraction form
    219,699.30/329,548.95 = 144,920.10/x
  3. Step 3: Cross multiply
    219,699.30x = 329,548.95 × 144,920.10
  4. Step 4: Simplify right side
    219,699.30x = 47,758,266,788.90
  5. Step 5: Solve for x
    x = 47,758,266,788.90/219,699.30
  6. Step 6: Final answer
    x = 217,380.15

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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.