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Finding the Fourth Proportional to 556,480.90, 834,356.85 and 219,318.40

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Solution

The fourth proportional to 556,480.90, 834,356.85 and 219,318.40 is: 328,833.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,480.90 : 834,356.85 = 219,318.40 : x
  2. Step 2: Convert to fraction form
    556,480.90/834,356.85 = 219,318.40/x
  3. Step 3: Cross multiply
    556,480.90x = 834,356.85 × 219,318.40
  4. Step 4: Simplify right side
    556,480.90x = 182,989,809,371.04
  5. Step 5: Solve for x
    x = 182,989,809,371.04/556,480.90
  6. Step 6: Final answer
    x = 328,833.94

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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.