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Finding the Fourth Proportional to 317,641.05, 476,455.41 and 128,097.16

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Solution

The fourth proportional to 317,641.05, 476,455.41 and 128,097.16 is: 192,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,641.05 : 476,455.41 = 128,097.16 : x
  2. Step 2: Convert to fraction form
    317,641.05/476,455.41 = 128,097.16/x
  3. Step 3: Cross multiply
    317,641.05x = 476,455.41 × 128,097.16
  4. Step 4: Simplify right side
    317,641.05x = 61,032,583,696.50
  5. Step 5: Solve for x
    x = 61,032,583,696.50/317,641.05
  6. Step 6: Final answer
    x = 192,143.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.