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Finding the Fourth Proportional to 317,134.49, 475,676.91 and 89,420.91

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Solution

The fourth proportional to 317,134.49, 475,676.91 and 89,420.91 is: 134,124.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,134.49 : 475,676.91 = 89,420.91 : x
  2. Step 2: Convert to fraction form
    317,134.49/475,676.91 = 89,420.91/x
  3. Step 3: Cross multiply
    317,134.49x = 475,676.91 × 89,420.91
  4. Step 4: Simplify right side
    317,134.49x = 42,535,460,374.40
  5. Step 5: Solve for x
    x = 42,535,460,374.40/317,134.49
  6. Step 6: Final answer
    x = 134,124.36

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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.