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Finding the Fourth Proportional to 302,571.40, 453,857.10 and 80,955.40

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Solution

The fourth proportional to 302,571.40, 453,857.10 and 80,955.40 is: 121,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,571.40 : 453,857.10 = 80,955.40 : x
  2. Step 2: Convert to fraction form
    302,571.40/453,857.10 = 80,955.40/x
  3. Step 3: Cross multiply
    302,571.40x = 453,857.10 × 80,955.40
  4. Step 4: Simplify right side
    302,571.40x = 36,742,183,073.34
  5. Step 5: Solve for x
    x = 36,742,183,073.34/302,571.40
  6. Step 6: Final answer
    x = 121,433.10

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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.