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Finding the Fourth Proportional to 373,205.79, 515,004.62 and 212,038.47

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Solution

The fourth proportional to 373,205.79, 515,004.62 and 212,038.47 is: 292,602.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,205.79 : 515,004.62 = 212,038.47 : x
  2. Step 2: Convert to fraction form
    373,205.79/515,004.62 = 212,038.47/x
  3. Step 3: Cross multiply
    373,205.79x = 515,004.62 × 212,038.47
  4. Step 4: Simplify right side
    373,205.79x = 109,200,790,607.54
  5. Step 5: Solve for x
    x = 109,200,790,607.54/373,205.79
  6. Step 6: Final answer
    x = 292,602.08

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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.