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Finding the Fourth Proportional to 664,871.80, 997,307.67 and 166,235.80

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Solution

The fourth proportional to 664,871.80, 997,307.67 and 166,235.80 is: 249,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,871.80 : 997,307.67 = 166,235.80 : x
  2. Step 2: Convert to fraction form
    664,871.80/997,307.67 = 166,235.80/x
  3. Step 3: Cross multiply
    664,871.80x = 997,307.67 × 166,235.80
  4. Step 4: Simplify right side
    664,871.80x = 165,788,238,368.59
  5. Step 5: Solve for x
    x = 165,788,238,368.59/664,871.80
  6. Step 6: Final answer
    x = 249,353.69

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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.