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Finding the Fourth Proportional to 310,574.60, 465,905.10 and 133,080.20

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Solution

The fourth proportional to 310,574.60, 465,905.10 and 133,080.20 is: 199,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,574.60 : 465,905.10 = 133,080.20 : x
  2. Step 2: Convert to fraction form
    310,574.60/465,905.10 = 133,080.20/x
  3. Step 3: Cross multiply
    310,574.60x = 465,905.10 × 133,080.20
  4. Step 4: Simplify right side
    310,574.60x = 62,002,743,889.02
  5. Step 5: Solve for x
    x = 62,002,743,889.02/310,574.60
  6. Step 6: Final answer
    x = 199,638.81

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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.