Home / 358,002.13-493,920-221,987.11

Finding the Fourth Proportional to 358,002.13, 493,920 and 221,987.11

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Solution

The fourth proportional to 358,002.13, 493,920 and 221,987.11 is: 306,265.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,002.13 : 493,920 = 221,987.11 : x
  2. Step 2: Convert to fraction form
    358,002.13/493,920 = 221,987.11/x
  3. Step 3: Cross multiply
    358,002.13x = 493,920 × 221,987.11
  4. Step 4: Simplify right side
    358,002.13x = 109,643,873,371.20
  5. Step 5: Solve for x
    x = 109,643,873,371.20/358,002.13
  6. Step 6: Final answer
    x = 306,265.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.