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Finding the Fourth Proportional to 307,913.40, 462,215.70 and 238,102.20

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Solution

The fourth proportional to 307,913.40, 462,215.70 and 238,102.20 is: 357,420.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,913.40 : 462,215.70 = 238,102.20 : x
  2. Step 2: Convert to fraction form
    307,913.40/462,215.70 = 238,102.20/x
  3. Step 3: Cross multiply
    307,913.40x = 462,215.70 × 238,102.20
  4. Step 4: Simplify right side
    307,913.40x = 110,054,575,044.54
  5. Step 5: Solve for x
    x = 110,054,575,044.54/307,913.40
  6. Step 6: Final answer
    x = 357,420.54

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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.