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Finding the Fourth Proportional to 373,482.60, 515,385.48 and 212,315.28

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Solution

The fourth proportional to 373,482.60, 515,385.48 and 212,315.28 is: 292,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,482.60 : 515,385.48 = 212,315.28 : x
  2. Step 2: Convert to fraction form
    373,482.60/515,385.48 = 212,315.28/x
  3. Step 3: Cross multiply
    373,482.60x = 515,385.48 × 212,315.28
  4. Step 4: Simplify right side
    373,482.60x = 109,424,212,494.13
  5. Step 5: Solve for x
    x = 109,424,212,494.13/373,482.60
  6. Step 6: Final answer
    x = 292,983.43

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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.