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Finding the Fourth Proportional to 400,927.68, 553,280.16 and 239,782.71

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Solution

The fourth proportional to 400,927.68, 553,280.16 and 239,782.71 is: 330,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,927.68 : 553,280.16 = 239,782.71 : x
  2. Step 2: Convert to fraction form
    400,927.68/553,280.16 = 239,782.71/x
  3. Step 3: Cross multiply
    400,927.68x = 553,280.16 × 239,782.71
  4. Step 4: Simplify right side
    400,927.68x = 132,667,016,154.03
  5. Step 5: Solve for x
    x = 132,667,016,154.03/400,927.68
  6. Step 6: Final answer
    x = 330,900.12

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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.