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Finding the Fourth Proportional to 420,083.03, 630,124.61 and 104,539.91

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Solution

The fourth proportional to 420,083.03, 630,124.61 and 104,539.91 is: 156,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,083.03 : 630,124.61 = 104,539.91 : x
  2. Step 2: Convert to fraction form
    420,083.03/630,124.61 = 104,539.91/x
  3. Step 3: Cross multiply
    420,083.03x = 630,124.61 × 104,539.91
  4. Step 4: Simplify right side
    420,083.03x = 65,873,166,344.86
  5. Step 5: Solve for x
    x = 65,873,166,344.86/420,083.03
  6. Step 6: Final answer
    x = 156,809.87

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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.