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Finding the Fourth Proportional to 317,708.69, 476,655.27 and 128,071.18

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Solution

The fourth proportional to 317,708.69, 476,655.27 and 128,071.18 is: 192,143.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,708.69 : 476,655.27 = 128,071.18 : x
  2. Step 2: Convert to fraction form
    317,708.69/476,655.27 = 128,071.18/x
  3. Step 3: Cross multiply
    317,708.69x = 476,655.27 × 128,071.18
  4. Step 4: Simplify right side
    317,708.69x = 61,045,802,997.67
  5. Step 5: Solve for x
    x = 61,045,802,997.67/317,708.69
  6. Step 6: Final answer
    x = 192,143.95

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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.