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Finding the Fourth Proportional to 264,666.60, 396,999.90 and 259,417.80

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Solution

The fourth proportional to 264,666.60, 396,999.90 and 259,417.80 is: 389,126.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,666.60 : 396,999.90 = 259,417.80 : x
  2. Step 2: Convert to fraction form
    264,666.60/396,999.90 = 259,417.80/x
  3. Step 3: Cross multiply
    264,666.60x = 396,999.90 × 259,417.80
  4. Step 4: Simplify right side
    264,666.60x = 102,988,840,658.22
  5. Step 5: Solve for x
    x = 102,988,840,658.22/264,666.60
  6. Step 6: Final answer
    x = 389,126.70

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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.