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Finding the Fourth Proportional to 389,375.48, 537,375.78 and 236,378.22

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Solution

The fourth proportional to 389,375.48, 537,375.78 and 236,378.22 is: 326,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,375.48 : 537,375.78 = 236,378.22 : x
  2. Step 2: Convert to fraction form
    389,375.48/537,375.78 = 236,378.22/x
  3. Step 3: Cross multiply
    389,375.48x = 537,375.78 × 236,378.22
  4. Step 4: Simplify right side
    389,375.48x = 127,023,930,347.51
  5. Step 5: Solve for x
    x = 127,023,930,347.51/389,375.48
  6. Step 6: Final answer
    x = 326,224.78

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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.