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Finding the Fourth Proportional to 554,470.40, 831,703.17 and 217,272.80

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Solution

The fourth proportional to 554,470.40, 831,703.17 and 217,272.80 is: 325,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,470.40 : 831,703.17 = 217,272.80 : x
  2. Step 2: Convert to fraction form
    554,470.40/831,703.17 = 217,272.80/x
  3. Step 3: Cross multiply
    554,470.40x = 831,703.17 × 217,272.80
  4. Step 4: Simplify right side
    554,470.40x = 180,706,476,514.78
  5. Step 5: Solve for x
    x = 180,706,476,514.78/554,470.40
  6. Step 6: Final answer
    x = 325,908.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.