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Finding the Fourth Proportional to 408,073.60, 612,110.40 and 258,482.80

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Solution

The fourth proportional to 408,073.60, 612,110.40 and 258,482.80 is: 387,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,073.60 : 612,110.40 = 258,482.80 : x
  2. Step 2: Convert to fraction form
    408,073.60/612,110.40 = 258,482.80/x
  3. Step 3: Cross multiply
    408,073.60x = 612,110.40 × 258,482.80
  4. Step 4: Simplify right side
    408,073.60x = 158,220,010,101.12
  5. Step 5: Solve for x
    x = 158,220,010,101.12/408,073.60
  6. Step 6: Final answer
    x = 387,724.20

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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.