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Finding the Fourth Proportional to 374,458.60, 561,687.90 and 215,026.30

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Solution

The fourth proportional to 374,458.60, 561,687.90 and 215,026.30 is: 322,539.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,458.60 : 561,687.90 = 215,026.30 : x
  2. Step 2: Convert to fraction form
    374,458.60/561,687.90 = 215,026.30/x
  3. Step 3: Cross multiply
    374,458.60x = 561,687.90 × 215,026.30
  4. Step 4: Simplify right side
    374,458.60x = 120,777,670,891.77
  5. Step 5: Solve for x
    x = 120,777,670,891.77/374,458.60
  6. Step 6: Final answer
    x = 322,539.45

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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.