Home / 238,986.20-358,479.29-72,774.20

Finding the Fourth Proportional to 238,986.20, 358,479.29 and 72,774.20

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Solution

The fourth proportional to 238,986.20, 358,479.29 and 72,774.20 is: 109,161.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,986.20 : 358,479.29 = 72,774.20 : x
  2. Step 2: Convert to fraction form
    238,986.20/358,479.29 = 72,774.20/x
  3. Step 3: Cross multiply
    238,986.20x = 358,479.29 × 72,774.20
  4. Step 4: Simplify right side
    238,986.20x = 26,088,041,390.05
  5. Step 5: Solve for x
    x = 26,088,041,390.05/238,986.20
  6. Step 6: Final answer
    x = 109,161.29

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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.