Home / 386,223.30-579,402.09-130,031.55

Finding the Fourth Proportional to 386,223.30, 579,402.09 and 130,031.55

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Solution

The fourth proportional to 386,223.30, 579,402.09 and 130,031.55 is: 195,069.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,223.30 : 579,402.09 = 130,031.55 : x
  2. Step 2: Convert to fraction form
    386,223.30/579,402.09 = 130,031.55/x
  3. Step 3: Cross multiply
    386,223.30x = 579,402.09 × 130,031.55
  4. Step 4: Simplify right side
    386,223.30x = 75,340,551,835.94
  5. Step 5: Solve for x
    x = 75,340,551,835.94/386,223.30
  6. Step 6: Final answer
    x = 195,069.93

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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.