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Finding the Fourth Proportional to 547,920.40, 756,132.95 and 306,207.01

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Solution

The fourth proportional to 547,920.40, 756,132.95 and 306,207.01 is: 422,567.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,920.40 : 756,132.95 = 306,207.01 : x
  2. Step 2: Convert to fraction form
    547,920.40/756,132.95 = 306,207.01/x
  3. Step 3: Cross multiply
    547,920.40x = 756,132.95 × 306,207.01
  4. Step 4: Simplify right side
    547,920.40x = 231,533,206,360.61
  5. Step 5: Solve for x
    x = 231,533,206,360.61/547,920.40
  6. Step 6: Final answer
    x = 422,567.23

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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.