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Finding the Fourth Proportional to 373,535.76, 515,458.32 and 212,368.56

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Solution

The fourth proportional to 373,535.76, 515,458.32 and 212,368.56 is: 293,056.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,535.76 : 515,458.32 = 212,368.56 : x
  2. Step 2: Convert to fraction form
    373,535.76/515,458.32 = 212,368.56/x
  3. Step 3: Cross multiply
    373,535.76x = 515,458.32 × 212,368.56
  4. Step 4: Simplify right side
    373,535.76x = 109,467,141,158.42
  5. Step 5: Solve for x
    x = 109,467,141,158.42/373,535.76
  6. Step 6: Final answer
    x = 293,056.66

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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.