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Finding the Fourth Proportional to 403,816, 557,277.60 and 224,979.52

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Solution

The fourth proportional to 403,816, 557,277.60 and 224,979.52 is: 310,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,816 : 557,277.60 = 224,979.52 : x
  2. Step 2: Convert to fraction form
    403,816/557,277.60 = 224,979.52/x
  3. Step 3: Cross multiply
    403,816x = 557,277.60 × 224,979.52
  4. Step 4: Simplify right side
    403,816x = 125,376,046,954.75
  5. Step 5: Solve for x
    x = 125,376,046,954.75/403,816
  6. Step 6: Final answer
    x = 310,478.16

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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.