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Finding the Fourth Proportional to 374,431.10, 561,646.65 and 214,998.80

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Solution

The fourth proportional to 374,431.10, 561,646.65 and 214,998.80 is: 322,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,431.10 : 561,646.65 = 214,998.80 : x
  2. Step 2: Convert to fraction form
    374,431.10/561,646.65 = 214,998.80/x
  3. Step 3: Cross multiply
    374,431.10x = 561,646.65 × 214,998.80
  4. Step 4: Simplify right side
    374,431.10x = 120,753,355,774.02
  5. Step 5: Solve for x
    x = 120,753,355,774.02/374,431.10
  6. Step 6: Final answer
    x = 322,498.20

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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.