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Finding the Fourth Proportional to 373,445.17, 515,351.90 and 212,300.26

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Solution

The fourth proportional to 373,445.17, 515,351.90 and 212,300.26 is: 292,972.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,445.17 : 515,351.90 = 212,300.26 : x
  2. Step 2: Convert to fraction form
    373,445.17/515,351.90 = 212,300.26/x
  3. Step 3: Cross multiply
    373,445.17x = 515,351.90 × 212,300.26
  4. Step 4: Simplify right side
    373,445.17x = 109,409,341,603.87
  5. Step 5: Solve for x
    x = 109,409,341,603.87/373,445.17
  6. Step 6: Final answer
    x = 292,972.97

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1.5x scale

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.