Home / 386,125.59-579,180-105,642.84

Finding the Fourth Proportional to 386,125.59, 579,180 and 105,642.84

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Solution

The fourth proportional to 386,125.59, 579,180 and 105,642.84 is: 158,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,125.59 : 579,180 = 105,642.84 : x
  2. Step 2: Convert to fraction form
    386,125.59/579,180 = 105,642.84/x
  3. Step 3: Cross multiply
    386,125.59x = 579,180 × 105,642.84
  4. Step 4: Simplify right side
    386,125.59x = 61,186,220,071.20
  5. Step 5: Solve for x
    x = 61,186,220,071.20/386,125.59
  6. Step 6: Final answer
    x = 158,461.97

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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.