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Finding the Fourth Proportional to 400,847.16, 553,260.12 and 249,915

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Solution

The fourth proportional to 400,847.16, 553,260.12 and 249,915 is: 344,939.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,847.16 : 553,260.12 = 249,915 : x
  2. Step 2: Convert to fraction form
    400,847.16/553,260.12 = 249,915/x
  3. Step 3: Cross multiply
    400,847.16x = 553,260.12 × 249,915
  4. Step 4: Simplify right side
    400,847.16x = 138,268,002,889.80
  5. Step 5: Solve for x
    x = 138,268,002,889.80/400,847.16
  6. Step 6: Final answer
    x = 344,939.46

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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.