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Finding the Fourth Proportional to 317,710.94, 476,658.64 and 128,073.43

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Solution

The fourth proportional to 317,710.94, 476,658.64 and 128,073.43 is: 192,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,710.94 : 476,658.64 = 128,073.43 : x
  2. Step 2: Convert to fraction form
    317,710.94/476,658.64 = 128,073.43/x
  3. Step 3: Cross multiply
    317,710.94x = 476,658.64 × 128,073.43
  4. Step 4: Simplify right side
    317,710.94x = 61,047,307,719.85
  5. Step 5: Solve for x
    x = 61,047,307,719.85/317,710.94
  6. Step 6: Final answer
    x = 192,147.33

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1.5x scale

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.