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Finding the Fourth Proportional to 400,447.40, 552,643.08 and 230,678.60

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Solution

The fourth proportional to 400,447.40, 552,643.08 and 230,678.60 is: 318,351.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,447.40 : 552,643.08 = 230,678.60 : x
  2. Step 2: Convert to fraction form
    400,447.40/552,643.08 = 230,678.60/x
  3. Step 3: Cross multiply
    400,447.40x = 552,643.08 × 230,678.60
  4. Step 4: Simplify right side
    400,447.40x = 127,482,932,510.65
  5. Step 5: Solve for x
    x = 127,482,932,510.65/400,447.40
  6. Step 6: Final answer
    x = 318,351.25

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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.