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Finding the Fourth Proportional to 455,699.05, 683,559.51 and 140,158.69

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Solution

The fourth proportional to 455,699.05, 683,559.51 and 140,158.69 is: 210,241.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,699.05 : 683,559.51 = 140,158.69 : x
  2. Step 2: Convert to fraction form
    455,699.05/683,559.51 = 140,158.69/x
  3. Step 3: Cross multiply
    455,699.05x = 683,559.51 × 140,158.69
  4. Step 4: Simplify right side
    455,699.05x = 95,806,803,224.15
  5. Step 5: Solve for x
    x = 95,806,803,224.15/455,699.05
  6. Step 6: Final answer
    x = 210,241.39

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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.