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Finding the Fourth Proportional to 373,641.60, 515,636.78 and 212,519.82

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Solution

The fourth proportional to 373,641.60, 515,636.78 and 212,519.82 is: 293,283.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,641.60 : 515,636.78 = 212,519.82 : x
  2. Step 2: Convert to fraction form
    373,641.60/515,636.78 = 212,519.82/x
  3. Step 3: Cross multiply
    373,641.60x = 515,636.78 × 212,519.82
  4. Step 4: Simplify right side
    373,641.60x = 109,583,035,670.98
  5. Step 5: Solve for x
    x = 109,583,035,670.98/373,641.60
  6. Step 6: Final answer
    x = 293,283.82

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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.