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Finding the Fourth Proportional to 317,800.84, 476,695.08 and 128,256.16

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Solution

The fourth proportional to 317,800.84, 476,695.08 and 128,256.16 is: 192,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,800.84 : 476,695.08 = 128,256.16 : x
  2. Step 2: Convert to fraction form
    317,800.84/476,695.08 = 128,256.16/x
  3. Step 3: Cross multiply
    317,800.84x = 476,695.08 × 128,256.16
  4. Step 4: Simplify right side
    317,800.84x = 61,139,080,451.69
  5. Step 5: Solve for x
    x = 61,139,080,451.69/317,800.84
  6. Step 6: Final answer
    x = 192,381.75

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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.