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Finding the Fourth Proportional to 457,258.74, 631,010.40 and 253,309.32

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Solution

The fourth proportional to 457,258.74, 631,010.40 and 253,309.32 is: 349,563.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,258.74 : 631,010.40 = 253,309.32 : x
  2. Step 2: Convert to fraction form
    457,258.74/631,010.40 = 253,309.32/x
  3. Step 3: Cross multiply
    457,258.74x = 631,010.40 × 253,309.32
  4. Step 4: Simplify right side
    457,258.74x = 159,840,815,336.93
  5. Step 5: Solve for x
    x = 159,840,815,336.93/457,258.74
  6. Step 6: Final answer
    x = 349,563.17

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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.