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Finding the Fourth Proportional to 317,670.50, 476,598.95 and 128,033.51

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Solution

The fourth proportional to 317,670.50, 476,598.95 and 128,033.51 is: 192,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,670.50 : 476,598.95 = 128,033.51 : x
  2. Step 2: Convert to fraction form
    317,670.50/476,598.95 = 128,033.51/x
  3. Step 3: Cross multiply
    317,670.50x = 476,598.95 × 128,033.51
  4. Step 4: Simplify right side
    317,670.50x = 61,020,634,367.90
  5. Step 5: Solve for x
    x = 61,020,634,367.90/317,670.50
  6. Step 6: Final answer
    x = 192,087.82

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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.