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Finding the Fourth Proportional to 400,878.80, 601,318.20 and 259,161.20

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Solution

The fourth proportional to 400,878.80, 601,318.20 and 259,161.20 is: 388,741.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,878.80 : 601,318.20 = 259,161.20 : x
  2. Step 2: Convert to fraction form
    400,878.80/601,318.20 = 259,161.20/x
  3. Step 3: Cross multiply
    400,878.80x = 601,318.20 × 259,161.20
  4. Step 4: Simplify right side
    400,878.80x = 155,838,346,293.84
  5. Step 5: Solve for x
    x = 155,838,346,293.84/400,878.80
  6. Step 6: Final answer
    x = 388,741.80

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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.