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Finding the Fourth Proportional to 300,397.60, 450,135.60 and 260,768.80

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Solution

The fourth proportional to 300,397.60, 450,135.60 and 260,768.80 is: 390,753.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,397.60 : 450,135.60 = 260,768.80 : x
  2. Step 2: Convert to fraction form
    300,397.60/450,135.60 = 260,768.80/x
  3. Step 3: Cross multiply
    300,397.60x = 450,135.60 × 260,768.80
  4. Step 4: Simplify right side
    300,397.60x = 117,381,320,249.28
  5. Step 5: Solve for x
    x = 117,381,320,249.28/300,397.60
  6. Step 6: Final answer
    x = 390,753.19

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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.