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Finding the Fourth Proportional to 320,416.50, 480,729.95 and 131,036.14

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Solution

The fourth proportional to 320,416.50, 480,729.95 and 131,036.14 is: 196,597.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,416.50 : 480,729.95 = 131,036.14 : x
  2. Step 2: Convert to fraction form
    320,416.50/480,729.95 = 131,036.14/x
  3. Step 3: Cross multiply
    320,416.50x = 480,729.95 × 131,036.14
  4. Step 4: Simplify right side
    320,416.50x = 62,992,996,156.16
  5. Step 5: Solve for x
    x = 62,992,996,156.16/320,416.50
  6. Step 6: Final answer
    x = 196,597.23

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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.