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Finding the Fourth Proportional to 551,580.48, 761,180.64 and 313,116.48

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Solution

The fourth proportional to 551,580.48, 761,180.64 and 313,116.48 is: 432,100.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,580.48 : 761,180.64 = 313,116.48 : x
  2. Step 2: Convert to fraction form
    551,580.48/761,180.64 = 313,116.48/x
  3. Step 3: Cross multiply
    551,580.48x = 761,180.64 × 313,116.48
  4. Step 4: Simplify right side
    551,580.48x = 238,338,202,640.95
  5. Step 5: Solve for x
    x = 238,338,202,640.95/551,580.48
  6. Step 6: Final answer
    x = 432,100.50

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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.