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Finding the Fourth Proportional to 307,435.80, 424,294.02 and 180,218.28

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Solution

The fourth proportional to 307,435.80, 424,294.02 and 180,218.28 is: 248,720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,435.80 : 424,294.02 = 180,218.28 : x
  2. Step 2: Convert to fraction form
    307,435.80/424,294.02 = 180,218.28/x
  3. Step 3: Cross multiply
    307,435.80x = 424,294.02 × 180,218.28
  4. Step 4: Simplify right side
    307,435.80x = 76,465,538,498.69
  5. Step 5: Solve for x
    x = 76,465,538,498.69/307,435.80
  6. Step 6: Final answer
    x = 248,720.35

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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.