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Finding the Fourth Proportional to 539,153.25, 744,031.49 and 300,689.25

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Solution

The fourth proportional to 539,153.25, 744,031.49 and 300,689.25 is: 414,951.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,153.25 : 744,031.49 = 300,689.25 : x
  2. Step 2: Convert to fraction form
    539,153.25/744,031.49 = 300,689.25/x
  3. Step 3: Cross multiply
    539,153.25x = 744,031.49 × 300,689.25
  4. Step 4: Simplify right side
    539,153.25x = 223,722,269,201.04
  5. Step 5: Solve for x
    x = 223,722,269,201.04/539,153.25
  6. Step 6: Final answer
    x = 414,951.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.