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Finding the Fourth Proportional to 310,321.76, 428,244.44 and 176,185.76

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Solution

The fourth proportional to 310,321.76, 428,244.44 and 176,185.76 is: 243,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,321.76 : 428,244.44 = 176,185.76 : x
  2. Step 2: Convert to fraction form
    310,321.76/428,244.44 = 176,185.76/x
  3. Step 3: Cross multiply
    310,321.76x = 428,244.44 × 176,185.76
  4. Step 4: Simplify right side
    310,321.76x = 75,450,572,127.17
  5. Step 5: Solve for x
    x = 75,450,572,127.17/310,321.76
  6. Step 6: Final answer
    x = 243,136.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.