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Finding the Fourth Proportional to 374,432.10, 561,648.15 and 214,999.80

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Solution

The fourth proportional to 374,432.10, 561,648.15 and 214,999.80 is: 322,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,432.10 : 561,648.15 = 214,999.80 : x
  2. Step 2: Convert to fraction form
    374,432.10/561,648.15 = 214,999.80/x
  3. Step 3: Cross multiply
    374,432.10x = 561,648.15 × 214,999.80
  4. Step 4: Simplify right side
    374,432.10x = 120,754,239,920.37
  5. Step 5: Solve for x
    x = 120,754,239,920.37/374,432.10
  6. Step 6: Final answer
    x = 322,499.70

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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.