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Finding the Fourth Proportional to 402,245.60, 603,587.10 and 165,612.20

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Solution

The fourth proportional to 402,245.60, 603,587.10 and 165,612.20 is: 248,508.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,245.60 : 603,587.10 = 165,612.20 : x
  2. Step 2: Convert to fraction form
    402,245.60/603,587.10 = 165,612.20/x
  3. Step 3: Cross multiply
    402,245.60x = 603,587.10 × 165,612.20
  4. Step 4: Simplify right side
    402,245.60x = 99,961,387,522.62
  5. Step 5: Solve for x
    x = 99,961,387,522.62/402,245.60
  6. Step 6: Final answer
    x = 248,508.34

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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.