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Finding the Fourth Proportional to 270,408.78, 405,858.20 and 144,154.89

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Solution

The fourth proportional to 270,408.78, 405,858.20 and 144,154.89 is: 216,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,408.78 : 405,858.20 = 144,154.89 : x
  2. Step 2: Convert to fraction form
    270,408.78/405,858.20 = 144,154.89/x
  3. Step 3: Cross multiply
    270,408.78x = 405,858.20 × 144,154.89
  4. Step 4: Simplify right side
    270,408.78x = 58,506,443,455.82
  5. Step 5: Solve for x
    x = 58,506,443,455.82/270,408.78
  6. Step 6: Final answer
    x = 216,362.96

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1.5x scale

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.