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Finding the Fourth Proportional to 561,377.40, 842,066.10 and 162,031.20

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Solution

The fourth proportional to 561,377.40, 842,066.10 and 162,031.20 is: 243,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,377.40 : 842,066.10 = 162,031.20 : x
  2. Step 2: Convert to fraction form
    561,377.40/842,066.10 = 162,031.20/x
  3. Step 3: Cross multiply
    561,377.40x = 842,066.10 × 162,031.20
  4. Step 4: Simplify right side
    561,377.40x = 136,440,980,662.32
  5. Step 5: Solve for x
    x = 136,440,980,662.32/561,377.40
  6. Step 6: Final answer
    x = 243,046.80

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Similar ratio
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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.