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Finding the Fourth Proportional to 208,058.40, 312,044.40 and 89,733.60

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Solution

The fourth proportional to 208,058.40, 312,044.40 and 89,733.60 is: 134,581.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,058.40 : 312,044.40 = 89,733.60 : x
  2. Step 2: Convert to fraction form
    208,058.40/312,044.40 = 89,733.60/x
  3. Step 3: Cross multiply
    208,058.40x = 312,044.40 × 89,733.60
  4. Step 4: Simplify right side
    208,058.40x = 28,000,867,371.84
  5. Step 5: Solve for x
    x = 28,000,867,371.84/208,058.40
  6. Step 6: Final answer
    x = 134,581.77

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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.