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Finding the Fourth Proportional to 303,853.20, 455,123.70 and 264,487.20

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Solution

The fourth proportional to 303,853.20, 455,123.70 and 264,487.20 is: 396,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,853.20 : 455,123.70 = 264,487.20 : x
  2. Step 2: Convert to fraction form
    303,853.20/455,123.70 = 264,487.20/x
  3. Step 3: Cross multiply
    303,853.20x = 455,123.70 × 264,487.20
  4. Step 4: Simplify right side
    303,853.20x = 120,374,393,066.64
  5. Step 5: Solve for x
    x = 120,374,393,066.64/303,853.20
  6. Step 6: Final answer
    x = 396,159.70

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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.