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Finding the Fourth Proportional to 210,108.22, 315,165.06 and 69,866.84

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Solution

The fourth proportional to 210,108.22, 315,165.06 and 69,866.84 is: 104,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,108.22 : 315,165.06 = 69,866.84 : x
  2. Step 2: Convert to fraction form
    210,108.22/315,165.06 = 69,866.84/x
  3. Step 3: Cross multiply
    210,108.22x = 315,165.06 × 69,866.84
  4. Step 4: Simplify right side
    210,108.22x = 22,019,586,820.61
  5. Step 5: Solve for x
    x = 22,019,586,820.61/210,108.22
  6. Step 6: Final answer
    x = 104,801.17

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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.