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Finding the Fourth Proportional to 373,641.12, 515,636.07 and 212,519.34

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Solution

The fourth proportional to 373,641.12, 515,636.07 and 212,519.34 is: 293,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,641.12 : 515,636.07 = 212,519.34 : x
  2. Step 2: Convert to fraction form
    373,641.12/515,636.07 = 212,519.34/x
  3. Step 3: Cross multiply
    373,641.12x = 515,636.07 × 212,519.34
  4. Step 4: Simplify right side
    373,641.12x = 109,582,637,276.59
  5. Step 5: Solve for x
    x = 109,582,637,276.59/373,641.12
  6. Step 6: Final answer
    x = 293,283.13

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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.