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Finding the Fourth Proportional to 338,791.10, 468,080.88 and 288,337.01

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Solution

The fourth proportional to 338,791.10, 468,080.88 and 288,337.01 is: 398,372.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,791.10 : 468,080.88 = 288,337.01 : x
  2. Step 2: Convert to fraction form
    338,791.10/468,080.88 = 288,337.01/x
  3. Step 3: Cross multiply
    338,791.10x = 468,080.88 × 288,337.01
  4. Step 4: Simplify right side
    338,791.10x = 134,965,041,377.37
  5. Step 5: Solve for x
    x = 134,965,041,377.37/338,791.10
  6. Step 6: Final answer
    x = 398,372.45

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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.