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Finding the Fourth Proportional to 664,384.20, 996,579.72 and 165,748.20

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Solution

The fourth proportional to 664,384.20, 996,579.72 and 165,748.20 is: 248,623.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,384.20 : 996,579.72 = 165,748.20 : x
  2. Step 2: Convert to fraction form
    664,384.20/996,579.72 = 165,748.20/x
  3. Step 3: Cross multiply
    664,384.20x = 996,579.72 × 165,748.20
  4. Step 4: Simplify right side
    664,384.20x = 165,181,294,746.50
  5. Step 5: Solve for x
    x = 165,181,294,746.50/664,384.20
  6. Step 6: Final answer
    x = 248,623.15

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Double scale
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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.