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Finding the Fourth Proportional to 219,162.40, 328,873.20 and 144,498.40

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Solution

The fourth proportional to 219,162.40, 328,873.20 and 144,498.40 is: 216,833.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,162.40 : 328,873.20 = 144,498.40 : x
  2. Step 2: Convert to fraction form
    219,162.40/328,873.20 = 144,498.40/x
  3. Step 3: Cross multiply
    219,162.40x = 328,873.20 × 144,498.40
  4. Step 4: Simplify right side
    219,162.40x = 47,521,651,202.88
  5. Step 5: Solve for x
    x = 47,521,651,202.88/219,162.40
  6. Step 6: Final answer
    x = 216,833.05

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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.