Home / 287,874.08-432,185.30-221,360.91

Finding the Fourth Proportional to 287,874.08, 432,185.30 and 221,360.91

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Solution

The fourth proportional to 287,874.08, 432,185.30 and 221,360.91 is: 332,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,874.08 : 432,185.30 = 221,360.91 : x
  2. Step 2: Convert to fraction form
    287,874.08/432,185.30 = 221,360.91/x
  3. Step 3: Cross multiply
    287,874.08x = 432,185.30 × 221,360.91
  4. Step 4: Simplify right side
    287,874.08x = 95,668,931,296.62
  5. Step 5: Solve for x
    x = 95,668,931,296.62/287,874.08
  6. Step 6: Final answer
    x = 332,329.10

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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.