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Finding the Fourth Proportional to 437,642.39, 603,994.55 and 253,921.43

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Solution

The fourth proportional to 437,642.39, 603,994.55 and 253,921.43 is: 350,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,642.39 : 603,994.55 = 253,921.43 : x
  2. Step 2: Convert to fraction form
    437,642.39/603,994.55 = 253,921.43/x
  3. Step 3: Cross multiply
    437,642.39x = 603,994.55 × 253,921.43
  4. Step 4: Simplify right side
    437,642.39x = 153,367,156,828.23
  5. Step 5: Solve for x
    x = 153,367,156,828.23/437,642.39
  6. Step 6: Final answer
    x = 350,439.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.