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Finding the Fourth Proportional to 299,382.80, 448,418.10 and 266,140.40

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Solution

The fourth proportional to 299,382.80, 448,418.10 and 266,140.40 is: 398,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,382.80 : 448,418.10 = 266,140.40 : x
  2. Step 2: Convert to fraction form
    299,382.80/448,418.10 = 266,140.40/x
  3. Step 3: Cross multiply
    299,382.80x = 448,418.10 × 266,140.40
  4. Step 4: Simplify right side
    299,382.80x = 119,342,172,501.24
  5. Step 5: Solve for x
    x = 119,342,172,501.24/299,382.80
  6. Step 6: Final answer
    x = 398,627.35

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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.