Home / 386,303.57-579,538.38-130,161.59

Finding the Fourth Proportional to 386,303.57, 579,538.38 and 130,161.59

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Solution

The fourth proportional to 386,303.57, 579,538.38 and 130,161.59 is: 195,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,303.57 : 579,538.38 = 130,161.59 : x
  2. Step 2: Convert to fraction form
    386,303.57/579,538.38 = 130,161.59/x
  3. Step 3: Cross multiply
    386,303.57x = 579,538.38 × 130,161.59
  4. Step 4: Simplify right side
    386,303.57x = 75,433,634,109.13
  5. Step 5: Solve for x
    x = 75,433,634,109.13/386,303.57
  6. Step 6: Final answer
    x = 195,270.35

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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.