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Finding the Fourth Proportional to 371,531.51, 512,713.45 and 210,386.52

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Solution

The fourth proportional to 371,531.51, 512,713.45 and 210,386.52 is: 290,333.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,531.51 : 512,713.45 = 210,386.52 : x
  2. Step 2: Convert to fraction form
    371,531.51/512,713.45 = 210,386.52/x
  3. Step 3: Cross multiply
    371,531.51x = 512,713.45 × 210,386.52
  4. Step 4: Simplify right side
    371,531.51x = 107,867,997,220.91
  5. Step 5: Solve for x
    x = 107,867,997,220.91/371,531.51
  6. Step 6: Final answer
    x = 290,333.37

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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.