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Finding the Fourth Proportional to 307,538.20, 461,307.30 and 141,326.20

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Solution

The fourth proportional to 307,538.20, 461,307.30 and 141,326.20 is: 211,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,538.20 : 461,307.30 = 141,326.20 : x
  2. Step 2: Convert to fraction form
    307,538.20/461,307.30 = 141,326.20/x
  3. Step 3: Cross multiply
    307,538.20x = 461,307.30 × 141,326.20
  4. Step 4: Simplify right side
    307,538.20x = 65,194,807,741.26
  5. Step 5: Solve for x
    x = 65,194,807,741.26/307,538.20
  6. Step 6: Final answer
    x = 211,989.30

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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.