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Finding the Fourth Proportional to 287,873.57, 432,184.55 and 221,360.41

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Solution

The fourth proportional to 287,873.57, 432,184.55 and 221,360.41 is: 332,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,873.57 : 432,184.55 = 221,360.41 : x
  2. Step 2: Convert to fraction form
    287,873.57/432,184.55 = 221,360.41/x
  3. Step 3: Cross multiply
    287,873.57x = 432,184.55 × 221,360.41
  4. Step 4: Simplify right side
    287,873.57x = 95,668,549,550.96
  5. Step 5: Solve for x
    x = 95,668,549,550.96/287,873.57
  6. Step 6: Final answer
    x = 332,328.35

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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.