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Finding the Fourth Proportional to 214,603.40, 321,905.10 and 125,899.40

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Solution

The fourth proportional to 214,603.40, 321,905.10 and 125,899.40 is: 188,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,603.40 : 321,905.10 = 125,899.40 : x
  2. Step 2: Convert to fraction form
    214,603.40/321,905.10 = 125,899.40/x
  3. Step 3: Cross multiply
    214,603.40x = 321,905.10 × 125,899.40
  4. Step 4: Simplify right side
    214,603.40x = 40,527,658,946.94
  5. Step 5: Solve for x
    x = 40,527,658,946.94/214,603.40
  6. Step 6: Final answer
    x = 188,849.10

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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.