Home / 266,302.08-399,431.20-79,313.60

Finding the Fourth Proportional to 266,302.08, 399,431.20 and 79,313.60

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Solution

The fourth proportional to 266,302.08, 399,431.20 and 79,313.60 is: 118,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,302.08 : 399,431.20 = 79,313.60 : x
  2. Step 2: Convert to fraction form
    266,302.08/399,431.20 = 79,313.60/x
  3. Step 3: Cross multiply
    266,302.08x = 399,431.20 × 79,313.60
  4. Step 4: Simplify right side
    266,302.08x = 31,680,326,424.32
  5. Step 5: Solve for x
    x = 31,680,326,424.32/266,302.08
  6. Step 6: Final answer
    x = 118,963.87

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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.