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Finding the Fourth Proportional to 210,062.20, 315,093.30 and 76,898.20

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Solution

The fourth proportional to 210,062.20, 315,093.30 and 76,898.20 is: 115,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,062.20 : 315,093.30 = 76,898.20 : x
  2. Step 2: Convert to fraction form
    210,062.20/315,093.30 = 76,898.20/x
  3. Step 3: Cross multiply
    210,062.20x = 315,093.30 × 76,898.20
  4. Step 4: Simplify right side
    210,062.20x = 24,230,107,602.06
  5. Step 5: Solve for x
    x = 24,230,107,602.06/210,062.20
  6. Step 6: Final answer
    x = 115,347.30

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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.