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Finding the Fourth Proportional to 373,187.64, 515,012.94 and 212,070.12

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Solution

The fourth proportional to 373,187.64, 515,012.94 and 212,070.12 is: 292,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,187.64 : 515,012.94 = 212,070.12 : x
  2. Step 2: Convert to fraction form
    373,187.64/515,012.94 = 212,070.12/x
  3. Step 3: Cross multiply
    373,187.64x = 515,012.94 × 212,070.12
  4. Step 4: Simplify right side
    373,187.64x = 109,218,855,987.35
  5. Step 5: Solve for x
    x = 109,218,855,987.35/373,187.64
  6. Step 6: Final answer
    x = 292,664.72

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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.