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Finding the Fourth Proportional to 324,549.68, 486,870.60 and 99,928.78

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Solution

The fourth proportional to 324,549.68, 486,870.60 and 99,928.78 is: 149,907.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,549.68 : 486,870.60 = 99,928.78 : x
  2. Step 2: Convert to fraction form
    324,549.68/486,870.60 = 99,928.78/x
  3. Step 3: Cross multiply
    324,549.68x = 486,870.60 × 99,928.78
  4. Step 4: Simplify right side
    324,549.68x = 48,652,385,075.87
  5. Step 5: Solve for x
    x = 48,652,385,075.87/324,549.68
  6. Step 6: Final answer
    x = 149,907.36

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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.