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Finding the Fourth Proportional to 210,119.04, 315,230.40 and 69,878.88

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Solution

The fourth proportional to 210,119.04, 315,230.40 and 69,878.88 is: 104,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,119.04 : 315,230.40 = 69,878.88 : x
  2. Step 2: Convert to fraction form
    210,119.04/315,230.40 = 69,878.88/x
  3. Step 3: Cross multiply
    210,119.04x = 315,230.40 × 69,878.88
  4. Step 4: Simplify right side
    210,119.04x = 22,027,947,293.95
  5. Step 5: Solve for x
    x = 22,027,947,293.95/210,119.04
  6. Step 6: Final answer
    x = 104,835.56

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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.