Home / 219,031.20-328,587.36-69,309.18

Finding the Fourth Proportional to 219,031.20, 328,587.36 and 69,309.18

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Solution

The fourth proportional to 219,031.20, 328,587.36 and 69,309.18 is: 103,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,031.20 : 328,587.36 = 69,309.18 : x
  2. Step 2: Convert to fraction form
    219,031.20/328,587.36 = 69,309.18/x
  3. Step 3: Cross multiply
    219,031.20x = 328,587.36 × 69,309.18
  4. Step 4: Simplify right side
    219,031.20x = 22,774,120,479.96
  5. Step 5: Solve for x
    x = 22,774,120,479.96/219,031.20
  6. Step 6: Final answer
    x = 103,976.60

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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.