Home / 400,390.42-552,549.61-245,339.02

Finding the Fourth Proportional to 400,390.42, 552,549.61 and 245,339.02

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Solution

The fourth proportional to 400,390.42, 552,549.61 and 245,339.02 is: 338,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,390.42 : 552,549.61 = 245,339.02 : x
  2. Step 2: Convert to fraction form
    400,390.42/552,549.61 = 245,339.02/x
  3. Step 3: Cross multiply
    400,390.42x = 552,549.61 × 245,339.02
  4. Step 4: Simplify right side
    400,390.42x = 135,561,979,818.78
  5. Step 5: Solve for x
    x = 135,561,979,818.78/400,390.42
  6. Step 6: Final answer
    x = 338,574.48

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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.