Home / 386,065.71-579,090.36-105,582.96

Finding the Fourth Proportional to 386,065.71, 579,090.36 and 105,582.96

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Solution

The fourth proportional to 386,065.71, 579,090.36 and 105,582.96 is: 158,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,065.71 : 579,090.36 = 105,582.96 : x
  2. Step 2: Convert to fraction form
    386,065.71/579,090.36 = 105,582.96/x
  3. Step 3: Cross multiply
    386,065.71x = 579,090.36 × 105,582.96
  4. Step 4: Simplify right side
    386,065.71x = 61,142,074,712.20
  5. Step 5: Solve for x
    x = 61,142,074,712.20/386,065.71
  6. Step 6: Final answer
    x = 158,372.20

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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.