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Finding the Fourth Proportional to 547,853.74, 756,023.65 and 306,138.30

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Solution

The fourth proportional to 547,853.74, 756,023.65 and 306,138.30 is: 422,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,853.74 : 756,023.65 = 306,138.30 : x
  2. Step 2: Convert to fraction form
    547,853.74/756,023.65 = 306,138.30/x
  3. Step 3: Cross multiply
    547,853.74x = 756,023.65 × 306,138.30
  4. Step 4: Simplify right side
    547,853.74x = 231,447,791,370.36
  5. Step 5: Solve for x
    x = 231,447,791,370.36/547,853.74
  6. Step 6: Final answer
    x = 422,462.74

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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.