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Finding the Fourth Proportional to 557,753.12, 769,707.62 and 303,104.51

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Solution

The fourth proportional to 557,753.12, 769,707.62 and 303,104.51 is: 418,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,753.12 : 769,707.62 = 303,104.51 : x
  2. Step 2: Convert to fraction form
    557,753.12/769,707.62 = 303,104.51/x
  3. Step 3: Cross multiply
    557,753.12x = 769,707.62 × 303,104.51
  4. Step 4: Simplify right side
    557,753.12x = 233,301,849,487.84
  5. Step 5: Solve for x
    x = 233,301,849,487.84/557,753.12
  6. Step 6: Final answer
    x = 418,288.74

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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.