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Finding the Fourth Proportional to 351,421.60, 527,132.40 and 161,881.60

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Solution

The fourth proportional to 351,421.60, 527,132.40 and 161,881.60 is: 242,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,421.60 : 527,132.40 = 161,881.60 : x
  2. Step 2: Convert to fraction form
    351,421.60/527,132.40 = 161,881.60/x
  3. Step 3: Cross multiply
    351,421.60x = 527,132.40 × 161,881.60
  4. Step 4: Simplify right side
    351,421.60x = 85,333,036,323.84
  5. Step 5: Solve for x
    x = 85,333,036,323.84/351,421.60
  6. Step 6: Final answer
    x = 242,822.40

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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.