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Finding the Fourth Proportional to 400,969, 553,337.22 and 239,830.84

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Solution

The fourth proportional to 400,969, 553,337.22 and 239,830.84 is: 330,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,969 : 553,337.22 = 239,830.84 : x
  2. Step 2: Convert to fraction form
    400,969/553,337.22 = 239,830.84/x
  3. Step 3: Cross multiply
    400,969x = 553,337.22 × 239,830.84
  4. Step 4: Simplify right side
    400,969x = 132,707,330,275.87
  5. Step 5: Solve for x
    x = 132,707,330,275.87/400,969
  6. Step 6: Final answer
    x = 330,966.56

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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.