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Finding the Fourth Proportional to 249,311.76, 343,856.16 and 220,662.24

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Solution

The fourth proportional to 249,311.76, 343,856.16 and 220,662.24 is: 304,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,311.76 : 343,856.16 = 220,662.24 : x
  2. Step 2: Convert to fraction form
    249,311.76/343,856.16 = 220,662.24/x
  3. Step 3: Cross multiply
    249,311.76x = 343,856.16 × 220,662.24
  4. Step 4: Simplify right side
    249,311.76x = 75,876,070,503.40
  5. Step 5: Solve for x
    x = 75,876,070,503.40/249,311.76
  6. Step 6: Final answer
    x = 304,342.12

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1.5x scale

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.