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Finding the Fourth Proportional to 373,665.35, 515,686.40 and 212,535.39

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Solution

The fourth proportional to 373,665.35, 515,686.40 and 212,535.39 is: 293,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,665.35 : 515,686.40 = 212,535.39 : x
  2. Step 2: Convert to fraction form
    373,665.35/515,686.40 = 212,535.39/x
  3. Step 3: Cross multiply
    373,665.35x = 515,686.40 × 212,535.39
  4. Step 4: Simplify right side
    373,665.35x = 109,601,611,809.85
  5. Step 5: Solve for x
    x = 109,601,611,809.85/373,665.35
  6. Step 6: Final answer
    x = 293,314.89

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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.