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Finding the Fourth Proportional to 310,047.40, 465,150.30 and 99,687.40

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Solution

The fourth proportional to 310,047.40, 465,150.30 and 99,687.40 is: 149,556.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,047.40 : 465,150.30 = 99,687.40 : x
  2. Step 2: Convert to fraction form
    310,047.40/465,150.30 = 99,687.40/x
  3. Step 3: Cross multiply
    310,047.40x = 465,150.30 × 99,687.40
  4. Step 4: Simplify right side
    310,047.40x = 46,369,624,016.22
  5. Step 5: Solve for x
    x = 46,369,624,016.22/310,047.40
  6. Step 6: Final answer
    x = 149,556.56

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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.