Home / 386,069.20-579,132.60-136,718.80

Finding the Fourth Proportional to 386,069.20, 579,132.60 and 136,718.80

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Solution

The fourth proportional to 386,069.20, 579,132.60 and 136,718.80 is: 205,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,069.20 : 579,132.60 = 136,718.80 : x
  2. Step 2: Convert to fraction form
    386,069.20/579,132.60 = 136,718.80/x
  3. Step 3: Cross multiply
    386,069.20x = 579,132.60 × 136,718.80
  4. Step 4: Simplify right side
    386,069.20x = 79,178,314,112.88
  5. Step 5: Solve for x
    x = 79,178,314,112.88/386,069.20
  6. Step 6: Final answer
    x = 205,088.40

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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.