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Finding the Fourth Proportional to 659,610.30, 989,415.45 and 210,327.60

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Solution

The fourth proportional to 659,610.30, 989,415.45 and 210,327.60 is: 315,491.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,610.30 : 989,415.45 = 210,327.60 : x
  2. Step 2: Convert to fraction form
    659,610.30/989,415.45 = 210,327.60/x
  3. Step 3: Cross multiply
    659,610.30x = 989,415.45 × 210,327.60
  4. Step 4: Simplify right side
    659,610.30x = 208,101,377,001.42
  5. Step 5: Solve for x
    x = 208,101,377,001.42/659,610.30
  6. Step 6: Final answer
    x = 315,491.40

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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.