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Finding the Fourth Proportional to 557,281.16, 769,283.43 and 376,238.32

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Solution

The fourth proportional to 557,281.16, 769,283.43 and 376,238.32 is: 519,367.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,281.16 : 769,283.43 = 376,238.32 : x
  2. Step 2: Convert to fraction form
    557,281.16/769,283.43 = 376,238.32/x
  3. Step 3: Cross multiply
    557,281.16x = 769,283.43 × 376,238.32
  4. Step 4: Simplify right side
    557,281.16x = 289,433,901,972.94
  5. Step 5: Solve for x
    x = 289,433,901,972.94/557,281.16
  6. Step 6: Final answer
    x = 519,367.82

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1.5x scale

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.