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Finding the Fourth Proportional to 307,548.06, 424,406.70 and 180,308.40

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Solution

The fourth proportional to 307,548.06, 424,406.70 and 180,308.40 is: 248,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,548.06 : 424,406.70 = 180,308.40 : x
  2. Step 2: Convert to fraction form
    307,548.06/424,406.70 = 180,308.40/x
  3. Step 3: Cross multiply
    307,548.06x = 424,406.70 × 180,308.40
  4. Step 4: Simplify right side
    307,548.06x = 76,524,093,026.28
  5. Step 5: Solve for x
    x = 76,524,093,026.28/307,548.06
  6. Step 6: Final answer
    x = 248,819.95

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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.