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Finding the Fourth Proportional to 312,478.58, 468,888.50 and 132,536.01

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Solution

The fourth proportional to 312,478.58, 468,888.50 and 132,536.01 is: 198,876.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,478.58 : 468,888.50 = 132,536.01 : x
  2. Step 2: Convert to fraction form
    312,478.58/468,888.50 = 132,536.01/x
  3. Step 3: Cross multiply
    312,478.58x = 468,888.50 × 132,536.01
  4. Step 4: Simplify right side
    312,478.58x = 62,144,610,262.21
  5. Step 5: Solve for x
    x = 62,144,610,262.21/312,478.58
  6. Step 6: Final answer
    x = 198,876.39

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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.