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Finding the Fourth Proportional to 324,810.20, 487,215.30 and 235,645.40

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Solution

The fourth proportional to 324,810.20, 487,215.30 and 235,645.40 is: 353,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,810.20 : 487,215.30 = 235,645.40 : x
  2. Step 2: Convert to fraction form
    324,810.20/487,215.30 = 235,645.40/x
  3. Step 3: Cross multiply
    324,810.20x = 487,215.30 × 235,645.40
  4. Step 4: Simplify right side
    324,810.20x = 114,810,044,254.62
  5. Step 5: Solve for x
    x = 114,810,044,254.62/324,810.20
  6. Step 6: Final answer
    x = 353,468.10

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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.