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Finding the Fourth Proportional to 373,851, 515,909.70 and 212,705.64

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Solution

The fourth proportional to 373,851, 515,909.70 and 212,705.64 is: 293,531.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,851 : 515,909.70 = 212,705.64 : x
  2. Step 2: Convert to fraction form
    373,851/515,909.70 = 212,705.64/x
  3. Step 3: Cross multiply
    373,851x = 515,909.70 × 212,705.64
  4. Step 4: Simplify right side
    373,851x = 109,736,902,920.71
  5. Step 5: Solve for x
    x = 109,736,902,920.71/373,851
  6. Step 6: Final answer
    x = 293,531.12

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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.