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Finding the Fourth Proportional to 384,736.68, 577,221.78 and 272,633.76

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Solution

The fourth proportional to 384,736.68, 577,221.78 and 272,633.76 is: 409,033.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,736.68 : 577,221.78 = 272,633.76 : x
  2. Step 2: Convert to fraction form
    384,736.68/577,221.78 = 272,633.76/x
  3. Step 3: Cross multiply
    384,736.68x = 577,221.78 × 272,633.76
  4. Step 4: Simplify right side
    384,736.68x = 157,370,144,235.29
  5. Step 5: Solve for x
    x = 157,370,144,235.29/384,736.68
  6. Step 6: Final answer
    x = 409,033.38

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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.