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Finding the Fourth Proportional to 420,104.16, 630,153 and 104,558.94

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Solution

The fourth proportional to 420,104.16, 630,153 and 104,558.94 is: 156,837.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,104.16 : 630,153 = 104,558.94 : x
  2. Step 2: Convert to fraction form
    420,104.16/630,153 = 104,558.94/x
  3. Step 3: Cross multiply
    420,104.16x = 630,153 × 104,558.94
  4. Step 4: Simplify right side
    420,104.16x = 65,888,129,717.82
  5. Step 5: Solve for x
    x = 65,888,129,717.82/420,104.16
  6. Step 6: Final answer
    x = 156,837.60

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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.