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Finding the Fourth Proportional to 317,707.56, 476,653.58 and 128,070.06

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Solution

The fourth proportional to 317,707.56, 476,653.58 and 128,070.06 is: 192,142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,707.56 : 476,653.58 = 128,070.06 : x
  2. Step 2: Convert to fraction form
    317,707.56/476,653.58 = 128,070.06/x
  3. Step 3: Cross multiply
    317,707.56x = 476,653.58 × 128,070.06
  4. Step 4: Simplify right side
    317,707.56x = 61,045,051,949.46
  5. Step 5: Solve for x
    x = 61,045,051,949.46/317,707.56
  6. Step 6: Final answer
    x = 192,142.27

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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.