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Finding the Fourth Proportional to 210,385.54, 315,735.04 and 154,370.39

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Solution

The fourth proportional to 210,385.54, 315,735.04 and 154,370.39 is: 231,670.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,385.54 : 315,735.04 = 154,370.39 : x
  2. Step 2: Convert to fraction form
    210,385.54/315,735.04 = 154,370.39/x
  3. Step 3: Cross multiply
    210,385.54x = 315,735.04 × 154,370.39
  4. Step 4: Simplify right side
    210,385.54x = 48,740,140,875.54
  5. Step 5: Solve for x
    x = 48,740,140,875.54/210,385.54
  6. Step 6: Final answer
    x = 231,670.59

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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.