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Finding the Fourth Proportional to 219,126.40, 328,819.20 and 144,462.40

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Solution

The fourth proportional to 219,126.40, 328,819.20 and 144,462.40 is: 216,779.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,126.40 : 328,819.20 = 144,462.40 : x
  2. Step 2: Convert to fraction form
    219,126.40/328,819.20 = 144,462.40/x
  3. Step 3: Cross multiply
    219,126.40x = 328,819.20 × 144,462.40
  4. Step 4: Simplify right side
    219,126.40x = 47,502,010,798.08
  5. Step 5: Solve for x
    x = 47,502,010,798.08/219,126.40
  6. Step 6: Final answer
    x = 216,779.04

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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.