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Finding the Fourth Proportional to 279,087.40, 418,631.10 and 160,989.40

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Solution

The fourth proportional to 279,087.40, 418,631.10 and 160,989.40 is: 241,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,087.40 : 418,631.10 = 160,989.40 : x
  2. Step 2: Convert to fraction form
    279,087.40/418,631.10 = 160,989.40/x
  3. Step 3: Cross multiply
    279,087.40x = 418,631.10 × 160,989.40
  4. Step 4: Simplify right side
    279,087.40x = 67,395,169,610.34
  5. Step 5: Solve for x
    x = 67,395,169,610.34/279,087.40
  6. Step 6: Final answer
    x = 241,484.10

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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.