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Finding the Fourth Proportional to 391,699.04, 540,543.12 and 230,552.48

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Solution

The fourth proportional to 391,699.04, 540,543.12 and 230,552.48 is: 318,161.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,699.04 : 540,543.12 = 230,552.48 : x
  2. Step 2: Convert to fraction form
    391,699.04/540,543.12 = 230,552.48/x
  3. Step 3: Cross multiply
    391,699.04x = 540,543.12 × 230,552.48
  4. Step 4: Simplify right side
    391,699.04x = 124,623,556,862.94
  5. Step 5: Solve for x
    x = 124,623,556,862.94/391,699.04
  6. Step 6: Final answer
    x = 318,161.51

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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.