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Finding the Fourth Proportional to 356,707.88, 492,238.12 and 203,715.88

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Solution

The fourth proportional to 356,707.88, 492,238.12 and 203,715.88 is: 281,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,707.88 : 492,238.12 = 203,715.88 : x
  2. Step 2: Convert to fraction form
    356,707.88/492,238.12 = 203,715.88/x
  3. Step 3: Cross multiply
    356,707.88x = 492,238.12 × 203,715.88
  4. Step 4: Simplify right side
    356,707.88x = 100,276,721,785.35
  5. Step 5: Solve for x
    x = 100,276,721,785.35/356,707.88
  6. Step 6: Final answer
    x = 281,117.20

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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.