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Finding the Fourth Proportional to 220,385.10, 330,577.65 and 208,404.30

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Solution

The fourth proportional to 220,385.10, 330,577.65 and 208,404.30 is: 312,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,385.10 : 330,577.65 = 208,404.30 : x
  2. Step 2: Convert to fraction form
    220,385.10/330,577.65 = 208,404.30/x
  3. Step 3: Cross multiply
    220,385.10x = 330,577.65 × 208,404.30
  4. Step 4: Simplify right side
    220,385.10x = 68,893,803,743.90
  5. Step 5: Solve for x
    x = 68,893,803,743.90/220,385.10
  6. Step 6: Final answer
    x = 312,606.45

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1.5x scale

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.