Home / 386,057.15-579,077.52-105,574.40

Finding the Fourth Proportional to 386,057.15, 579,077.52 and 105,574.40

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Solution

The fourth proportional to 386,057.15, 579,077.52 and 105,574.40 is: 158,359.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,057.15 : 579,077.52 = 105,574.40 : x
  2. Step 2: Convert to fraction form
    386,057.15/579,077.52 = 105,574.40/x
  3. Step 3: Cross multiply
    386,057.15x = 579,077.52 × 105,574.40
  4. Step 4: Simplify right side
    386,057.15x = 61,135,761,727.49
  5. Step 5: Solve for x
    x = 61,135,761,727.49/386,057.15
  6. Step 6: Final answer
    x = 158,359.36

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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.