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Finding the Fourth Proportional to 299,309.60, 448,964.40 and 260,818.40

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Solution

The fourth proportional to 299,309.60, 448,964.40 and 260,818.40 is: 391,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,309.60 : 448,964.40 = 260,818.40 : x
  2. Step 2: Convert to fraction form
    299,309.60/448,964.40 = 260,818.40/x
  3. Step 3: Cross multiply
    299,309.60x = 448,964.40 × 260,818.40
  4. Step 4: Simplify right side
    299,309.60x = 117,098,176,464.96
  5. Step 5: Solve for x
    x = 117,098,176,464.96/299,309.60
  6. Step 6: Final answer
    x = 391,227.60

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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.