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Finding the Fourth Proportional to 373,465.81, 515,426.39 and 212,345

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Solution

The fourth proportional to 373,465.81, 515,426.39 and 212,345 is: 293,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,465.81 : 515,426.39 = 212,345 : x
  2. Step 2: Convert to fraction form
    373,465.81/515,426.39 = 212,345/x
  3. Step 3: Cross multiply
    373,465.81x = 515,426.39 × 212,345
  4. Step 4: Simplify right side
    373,465.81x = 109,448,216,784.55
  5. Step 5: Solve for x
    x = 109,448,216,784.55/373,465.81
  6. Step 6: Final answer
    x = 293,060.87

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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.