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Finding the Fourth Proportional to 659,845.44, 989,865.60 and 239,023.20

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Solution

The fourth proportional to 659,845.44, 989,865.60 and 239,023.20 is: 358,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,845.44 : 989,865.60 = 239,023.20 : x
  2. Step 2: Convert to fraction form
    659,845.44/989,865.60 = 239,023.20/x
  3. Step 3: Cross multiply
    659,845.44x = 989,865.60 × 239,023.20
  4. Step 4: Simplify right side
    659,845.44x = 236,600,843,281.92
  5. Step 5: Solve for x
    x = 236,600,843,281.92/659,845.44
  6. Step 6: Final answer
    x = 358,570.10

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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.