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Finding the Fourth Proportional to 557,876.25, 769,866.35 and 303,228.81

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Solution

The fourth proportional to 557,876.25, 769,866.35 and 303,228.81 is: 418,454.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,876.25 : 769,866.35 = 303,228.81 : x
  2. Step 2: Convert to fraction form
    557,876.25/769,866.35 = 303,228.81/x
  3. Step 3: Cross multiply
    557,876.25x = 769,866.35 × 303,228.81
  4. Step 4: Simplify right side
    557,876.25x = 233,445,655,653.40
  5. Step 5: Solve for x
    x = 233,445,655,653.40/557,876.25
  6. Step 6: Final answer
    x = 418,454.19

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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.