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Finding the Fourth Proportional to 373,188.57, 514,980.78 and 212,021.25

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Solution

The fourth proportional to 373,188.57, 514,980.78 and 212,021.25 is: 292,578.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,188.57 : 514,980.78 = 212,021.25 : x
  2. Step 2: Convert to fraction form
    373,188.57/514,980.78 = 212,021.25/x
  3. Step 3: Cross multiply
    373,188.57x = 514,980.78 × 212,021.25
  4. Step 4: Simplify right side
    373,188.57x = 109,186,868,701.58
  5. Step 5: Solve for x
    x = 109,186,868,701.58/373,188.57
  6. Step 6: Final answer
    x = 292,578.28

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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.