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Finding the Fourth Proportional to 400,839.60, 601,259.40 and 248,624.40

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Solution

The fourth proportional to 400,839.60, 601,259.40 and 248,624.40 is: 372,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,839.60 : 601,259.40 = 248,624.40 : x
  2. Step 2: Convert to fraction form
    400,839.60/601,259.40 = 248,624.40/x
  3. Step 3: Cross multiply
    400,839.60x = 601,259.40 × 248,624.40
  4. Step 4: Simplify right side
    400,839.60x = 149,487,757,569.36
  5. Step 5: Solve for x
    x = 149,487,757,569.36/400,839.60
  6. Step 6: Final answer
    x = 372,936.60

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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.