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Finding the Fourth Proportional to 373,710.78, 515,721.53 and 203,944.91

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Solution

The fourth proportional to 373,710.78, 515,721.53 and 203,944.91 is: 281,444.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,710.78 : 515,721.53 = 203,944.91 : x
  2. Step 2: Convert to fraction form
    373,710.78/515,721.53 = 203,944.91/x
  3. Step 3: Cross multiply
    373,710.78x = 515,721.53 × 203,944.91
  4. Step 4: Simplify right side
    373,710.78x = 105,178,778,952.17
  5. Step 5: Solve for x
    x = 105,178,778,952.17/373,710.78
  6. Step 6: Final answer
    x = 281,444.33

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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.