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Finding the Fourth Proportional to 245,641.90, 368,463.03 and 68,149.08

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Solution

The fourth proportional to 245,641.90, 368,463.03 and 68,149.08 is: 102,223.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,641.90 : 368,463.03 = 68,149.08 : x
  2. Step 2: Convert to fraction form
    245,641.90/368,463.03 = 68,149.08/x
  3. Step 3: Cross multiply
    245,641.90x = 368,463.03 × 68,149.08
  4. Step 4: Simplify right side
    245,641.90x = 25,110,416,508.51
  5. Step 5: Solve for x
    x = 25,110,416,508.51/245,641.90
  6. Step 6: Final answer
    x = 102,223.67

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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.