Home / 386,011.12-579,016.92-105,507.28

Finding the Fourth Proportional to 386,011.12, 579,016.92 and 105,507.28

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Solution

The fourth proportional to 386,011.12, 579,016.92 and 105,507.28 is: 158,260.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,011.12 : 579,016.92 = 105,507.28 : x
  2. Step 2: Convert to fraction form
    386,011.12/579,016.92 = 105,507.28/x
  3. Step 3: Cross multiply
    386,011.12x = 579,016.92 × 105,507.28
  4. Step 4: Simplify right side
    386,011.12x = 61,090,500,303.18
  5. Step 5: Solve for x
    x = 61,090,500,303.18/386,011.12
  6. Step 6: Final answer
    x = 158,260.99

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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.