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Finding the Fourth Proportional to 373,535.55, 515,503.44 and 212,405.63

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Solution

The fourth proportional to 373,535.55, 515,503.44 and 212,405.63 is: 293,133.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,535.55 : 515,503.44 = 212,405.63 : x
  2. Step 2: Convert to fraction form
    373,535.55/515,503.44 = 212,405.63/x
  3. Step 3: Cross multiply
    373,535.55x = 515,503.44 × 212,405.63
  4. Step 4: Simplify right side
    373,535.55x = 109,495,830,362.85
  5. Step 5: Solve for x
    x = 109,495,830,362.85/373,535.55
  6. Step 6: Final answer
    x = 293,133.63

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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.