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Finding the Fourth Proportional to 391,542.48, 540,323.56 and 219,460.13

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Solution

The fourth proportional to 391,542.48, 540,323.56 and 219,460.13 is: 302,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,542.48 : 540,323.56 = 219,460.13 : x
  2. Step 2: Convert to fraction form
    391,542.48/540,323.56 = 219,460.13/x
  3. Step 3: Cross multiply
    391,542.48x = 540,323.56 × 219,460.13
  4. Step 4: Simplify right side
    391,542.48x = 118,579,481,357.90
  5. Step 5: Solve for x
    x = 118,579,481,357.90/391,542.48
  6. Step 6: Final answer
    x = 302,852.15

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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.