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Finding the Fourth Proportional to 309,966.80, 464,888.96 and 85,269.26

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Solution

The fourth proportional to 309,966.80, 464,888.96 and 85,269.26 is: 127,887.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,966.80 : 464,888.96 = 85,269.26 : x
  2. Step 2: Convert to fraction form
    309,966.80/464,888.96 = 85,269.26/x
  3. Step 3: Cross multiply
    309,966.80x = 464,888.96 × 85,269.26
  4. Step 4: Simplify right side
    309,966.80x = 39,640,737,601.37
  5. Step 5: Solve for x
    x = 39,640,737,601.37/309,966.80
  6. Step 6: Final answer
    x = 127,887.04

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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.