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Finding the Fourth Proportional to 378,759.68, 522,501.12 and 247,859.84

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Solution

The fourth proportional to 378,759.68, 522,501.12 and 247,859.84 is: 341,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,759.68 : 522,501.12 = 247,859.84 : x
  2. Step 2: Convert to fraction form
    378,759.68/522,501.12 = 247,859.84/x
  3. Step 3: Cross multiply
    378,759.68x = 522,501.12 × 247,859.84
  4. Step 4: Simplify right side
    378,759.68x = 129,507,044,003.02
  5. Step 5: Solve for x
    x = 129,507,044,003.02/378,759.68
  6. Step 6: Final answer
    x = 341,924.05

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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.