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Finding the Fourth Proportional to 265,655.20, 398,482.80 and 262,890.40

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Solution

The fourth proportional to 265,655.20, 398,482.80 and 262,890.40 is: 394,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,655.20 : 398,482.80 = 262,890.40 : x
  2. Step 2: Convert to fraction form
    265,655.20/398,482.80 = 262,890.40/x
  3. Step 3: Cross multiply
    265,655.20x = 398,482.80 × 262,890.40
  4. Step 4: Simplify right side
    265,655.20x = 104,757,302,685.12
  5. Step 5: Solve for x
    x = 104,757,302,685.12/265,655.20
  6. Step 6: Final answer
    x = 394,335.60

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Similar ratio
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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.