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Finding the Fourth Proportional to 307,987.80, 425,022.30 and 173,851.80

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Solution

The fourth proportional to 307,987.80, 425,022.30 and 173,851.80 is: 239,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,987.80 : 425,022.30 = 173,851.80 : x
  2. Step 2: Convert to fraction form
    307,987.80/425,022.30 = 173,851.80/x
  3. Step 3: Cross multiply
    307,987.80x = 425,022.30 × 173,851.80
  4. Step 4: Simplify right side
    307,987.80x = 73,890,891,895.14
  5. Step 5: Solve for x
    x = 73,890,891,895.14/307,987.80
  6. Step 6: Final answer
    x = 239,915.00

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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.