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Finding the Fourth Proportional to 300,381.29, 450,514.51 and 90,019.22

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Solution

The fourth proportional to 300,381.29, 450,514.51 and 90,019.22 is: 135,011.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,381.29 : 450,514.51 = 90,019.22 : x
  2. Step 2: Convert to fraction form
    300,381.29/450,514.51 = 90,019.22/x
  3. Step 3: Cross multiply
    300,381.29x = 450,514.51 × 90,019.22
  4. Step 4: Simplify right side
    300,381.29x = 40,554,966,253.26
  5. Step 5: Solve for x
    x = 40,554,966,253.26/300,381.29
  6. Step 6: Final answer
    x = 135,011.63

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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.