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Finding the Fourth Proportional to 307,731.40, 461,640.30 and 97,347.40

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Solution

The fourth proportional to 307,731.40, 461,640.30 and 97,347.40 is: 146,034.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,731.40 : 461,640.30 = 97,347.40 : x
  2. Step 2: Convert to fraction form
    307,731.40/461,640.30 = 97,347.40/x
  3. Step 3: Cross multiply
    307,731.40x = 461,640.30 × 97,347.40
  4. Step 4: Simplify right side
    307,731.40x = 44,939,482,940.22
  5. Step 5: Solve for x
    x = 44,939,482,940.22/307,731.40
  6. Step 6: Final answer
    x = 146,034.77

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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.