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Finding the Fourth Proportional to 307,812.80, 461,719.20 and 175,102.40

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Solution

The fourth proportional to 307,812.80, 461,719.20 and 175,102.40 is: 262,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,812.80 : 461,719.20 = 175,102.40 : x
  2. Step 2: Convert to fraction form
    307,812.80/461,719.20 = 175,102.40/x
  3. Step 3: Cross multiply
    307,812.80x = 461,719.20 × 175,102.40
  4. Step 4: Simplify right side
    307,812.80x = 80,848,140,046.08
  5. Step 5: Solve for x
    x = 80,848,140,046.08/307,812.80
  6. Step 6: Final answer
    x = 262,653.60

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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.