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Finding the Fourth Proportional to 410,209.20, 615,313.80 and 291,236.40

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Solution

The fourth proportional to 410,209.20, 615,313.80 and 291,236.40 is: 436,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,209.20 : 615,313.80 = 291,236.40 : x
  2. Step 2: Convert to fraction form
    410,209.20/615,313.80 = 291,236.40/x
  3. Step 3: Cross multiply
    410,209.20x = 615,313.80 × 291,236.40
  4. Step 4: Simplify right side
    410,209.20x = 179,201,775,982.32
  5. Step 5: Solve for x
    x = 179,201,775,982.32/410,209.20
  6. Step 6: Final answer
    x = 436,854.60

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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.