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Finding the Fourth Proportional to 557,920.66, 769,931.02 and 303,271.86

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Solution

The fourth proportional to 557,920.66, 769,931.02 and 303,271.86 is: 418,515.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,920.66 : 769,931.02 = 303,271.86 : x
  2. Step 2: Convert to fraction form
    557,920.66/769,931.02 = 303,271.86/x
  3. Step 3: Cross multiply
    557,920.66x = 769,931.02 × 303,271.86
  4. Step 4: Simplify right side
    557,920.66x = 233,498,412,507.10
  5. Step 5: Solve for x
    x = 233,498,412,507.10/557,920.66
  6. Step 6: Final answer
    x = 418,515.44

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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.