Home / 400,853.16-553,268.40-249,921

Finding the Fourth Proportional to 400,853.16, 553,268.40 and 249,921

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Solution

The fourth proportional to 400,853.16, 553,268.40 and 249,921 is: 344,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,853.16 : 553,268.40 = 249,921 : x
  2. Step 2: Convert to fraction form
    400,853.16/553,268.40 = 249,921/x
  3. Step 3: Cross multiply
    400,853.16x = 553,268.40 × 249,921
  4. Step 4: Simplify right side
    400,853.16x = 138,273,391,796.40
  5. Step 5: Solve for x
    x = 138,273,391,796.40/400,853.16
  6. Step 6: Final answer
    x = 344,947.74

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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.