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Finding the Fourth Proportional to 262,807.60, 393,919.80 and 113,022.40

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Solution

The fourth proportional to 262,807.60, 393,919.80 and 113,022.40 is: 169,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,807.60 : 393,919.80 = 113,022.40 : x
  2. Step 2: Convert to fraction form
    262,807.60/393,919.80 = 113,022.40/x
  3. Step 3: Cross multiply
    262,807.60x = 393,919.80 × 113,022.40
  4. Step 4: Simplify right side
    262,807.60x = 44,521,761,203.52
  5. Step 5: Solve for x
    x = 44,521,761,203.52/262,807.60
  6. Step 6: Final answer
    x = 169,408.20

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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.