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Finding the Fourth Proportional to 205,492.79, 308,264.09 and 72,345.80

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Solution

The fourth proportional to 205,492.79, 308,264.09 and 72,345.80 is: 108,527.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,492.79 : 308,264.09 = 72,345.80 : x
  2. Step 2: Convert to fraction form
    205,492.79/308,264.09 = 72,345.80/x
  3. Step 3: Cross multiply
    205,492.79x = 308,264.09 × 72,345.80
  4. Step 4: Simplify right side
    205,492.79x = 22,301,610,299.27
  5. Step 5: Solve for x
    x = 22,301,610,299.27/205,492.79
  6. Step 6: Final answer
    x = 108,527.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.