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Finding the Fourth Proportional to 664,875.30, 997,312.90 and 166,239.30

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Solution

The fourth proportional to 664,875.30, 997,312.90 and 166,239.30 is: 249,358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,875.30 : 997,312.90 = 166,239.30 : x
  2. Step 2: Convert to fraction form
    664,875.30/997,312.90 = 166,239.30/x
  3. Step 3: Cross multiply
    664,875.30x = 997,312.90 × 166,239.30
  4. Step 4: Simplify right side
    664,875.30x = 165,792,598,376.97
  5. Step 5: Solve for x
    x = 165,792,598,376.97/664,875.30
  6. Step 6: Final answer
    x = 249,358.94

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Double scale
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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.