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Finding the Fourth Proportional to 455,535.78, 683,369.01 and 140,019.18

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Solution

The fourth proportional to 455,535.78, 683,369.01 and 140,019.18 is: 210,048.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,535.78 : 683,369.01 = 140,019.18 : x
  2. Step 2: Convert to fraction form
    455,535.78/683,369.01 = 140,019.18/x
  3. Step 3: Cross multiply
    455,535.78x = 683,369.01 × 140,019.18
  4. Step 4: Simplify right side
    455,535.78x = 95,684,768,417.61
  5. Step 5: Solve for x
    x = 95,684,768,417.61/455,535.78
  6. Step 6: Final answer
    x = 210,048.85

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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.