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Finding the Fourth Proportional to 324,278.94, 486,419.85 and 99,637.50

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Solution

The fourth proportional to 324,278.94, 486,419.85 and 99,637.50 is: 149,456.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,278.94 : 486,419.85 = 99,637.50 : x
  2. Step 2: Convert to fraction form
    324,278.94/486,419.85 = 99,637.50/x
  3. Step 3: Cross multiply
    324,278.94x = 486,419.85 × 99,637.50
  4. Step 4: Simplify right side
    324,278.94x = 48,465,657,804.38
  5. Step 5: Solve for x
    x = 48,465,657,804.38/324,278.94
  6. Step 6: Final answer
    x = 149,456.69

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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.