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Finding the Fourth Proportional to 357,009.53, 535,140.68 and 120,270.42

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Solution

The fourth proportional to 357,009.53, 535,140.68 and 120,270.42 is: 180,279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,009.53 : 535,140.68 = 120,270.42 : x
  2. Step 2: Convert to fraction form
    357,009.53/535,140.68 = 120,270.42/x
  3. Step 3: Cross multiply
    357,009.53x = 535,140.68 × 120,270.42
  4. Step 4: Simplify right side
    357,009.53x = 64,361,593,741.33
  5. Step 5: Solve for x
    x = 64,361,593,741.33/357,009.53
  6. Step 6: Final answer
    x = 180,279.77

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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.