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Finding the Fourth Proportional to 400,955.46, 553,318.34 and 239,810.52

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Solution

The fourth proportional to 400,955.46, 553,318.34 and 239,810.52 is: 330,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,955.46 : 553,318.34 = 239,810.52 : x
  2. Step 2: Convert to fraction form
    400,955.46/553,318.34 = 239,810.52/x
  3. Step 3: Cross multiply
    400,955.46x = 553,318.34 × 239,810.52
  4. Step 4: Simplify right side
    400,955.46x = 132,691,558,840.94
  5. Step 5: Solve for x
    x = 132,691,558,840.94/400,955.46
  6. Step 6: Final answer
    x = 330,938.40

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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.