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Finding the Fourth Proportional to 307,791.40, 461,730.30 and 97,407.40

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Solution

The fourth proportional to 307,791.40, 461,730.30 and 97,407.40 is: 146,124.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,791.40 : 461,730.30 = 97,407.40 : x
  2. Step 2: Convert to fraction form
    307,791.40/461,730.30 = 97,407.40/x
  3. Step 3: Cross multiply
    307,791.40x = 461,730.30 × 97,407.40
  4. Step 4: Simplify right side
    307,791.40x = 44,975,948,024.22
  5. Step 5: Solve for x
    x = 44,975,948,024.22/307,791.40
  6. Step 6: Final answer
    x = 146,124.77

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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.