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Finding the Fourth Proportional to 325,870.80, 488,806.20 and 136,298.40

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Solution

The fourth proportional to 325,870.80, 488,806.20 and 136,298.40 is: 204,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,870.80 : 488,806.20 = 136,298.40 : x
  2. Step 2: Convert to fraction form
    325,870.80/488,806.20 = 136,298.40/x
  3. Step 3: Cross multiply
    325,870.80x = 488,806.20 × 136,298.40
  4. Step 4: Simplify right side
    325,870.80x = 66,623,502,970.08
  5. Step 5: Solve for x
    x = 66,623,502,970.08/325,870.80
  6. Step 6: Final answer
    x = 204,447.60

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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.