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Finding the Fourth Proportional to 518,402.50, 777,648.30 and 144,425.50

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Solution

The fourth proportional to 518,402.50, 777,648.30 and 144,425.50 is: 216,650.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,402.50 : 777,648.30 = 144,425.50 : x
  2. Step 2: Convert to fraction form
    518,402.50/777,648.30 = 144,425.50/x
  3. Step 3: Cross multiply
    518,402.50x = 777,648.30 × 144,425.50
  4. Step 4: Simplify right side
    518,402.50x = 112,312,244,551.65
  5. Step 5: Solve for x
    x = 112,312,244,551.65/518,402.50
  6. Step 6: Final answer
    x = 216,650.66

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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.