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Finding the Fourth Proportional to 553,236.72, 763,476.48 and 326,881.68

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Solution

The fourth proportional to 553,236.72, 763,476.48 and 326,881.68 is: 451,102.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,236.72 : 763,476.48 = 326,881.68 : x
  2. Step 2: Convert to fraction form
    553,236.72/763,476.48 = 326,881.68/x
  3. Step 3: Cross multiply
    553,236.72x = 763,476.48 × 326,881.68
  4. Step 4: Simplify right side
    553,236.72x = 249,566,474,422.89
  5. Step 5: Solve for x
    x = 249,566,474,422.89/553,236.72
  6. Step 6: Final answer
    x = 451,102.51

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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.