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Finding the Fourth Proportional to 400,777.66, 553,164.15 and 249,845.50

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Solution

The fourth proportional to 400,777.66, 553,164.15 and 249,845.50 is: 344,843.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,777.66 : 553,164.15 = 249,845.50 : x
  2. Step 2: Convert to fraction form
    400,777.66/553,164.15 = 249,845.50/x
  3. Step 3: Cross multiply
    400,777.66x = 553,164.15 × 249,845.50
  4. Step 4: Simplify right side
    400,777.66x = 138,205,573,638.83
  5. Step 5: Solve for x
    x = 138,205,573,638.83/400,777.66
  6. Step 6: Final answer
    x = 344,843.51

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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.