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Finding the Fourth Proportional to 324,040.64, 486,075.56 and 99,384.71

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Solution

The fourth proportional to 324,040.64, 486,075.56 and 99,384.71 is: 149,081.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,040.64 : 486,075.56 = 99,384.71 : x
  2. Step 2: Convert to fraction form
    324,040.64/486,075.56 = 99,384.71/x
  3. Step 3: Cross multiply
    324,040.64x = 486,075.56 × 99,384.71
  4. Step 4: Simplify right side
    324,040.64x = 48,308,475,641.39
  5. Step 5: Solve for x
    x = 48,308,475,641.39/324,040.64
  6. Step 6: Final answer
    x = 149,081.54

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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.