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Finding the Fourth Proportional to 548,050.05, 756,308.80 and 321,695.55

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Solution

The fourth proportional to 548,050.05, 756,308.80 and 321,695.55 is: 443,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,050.05 : 756,308.80 = 321,695.55 : x
  2. Step 2: Convert to fraction form
    548,050.05/756,308.80 = 321,695.55/x
  3. Step 3: Cross multiply
    548,050.05x = 756,308.80 × 321,695.55
  4. Step 4: Simplify right side
    548,050.05x = 243,301,175,385.84
  5. Step 5: Solve for x
    x = 243,301,175,385.84/548,050.05
  6. Step 6: Final answer
    x = 443,939.70

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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.