Home / 210,380.60-315,573.69-70,139.27

Finding the Fourth Proportional to 210,380.60, 315,573.69 and 70,139.27

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Solution

The fourth proportional to 210,380.60, 315,573.69 and 70,139.27 is: 105,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,380.60 : 315,573.69 = 70,139.27 : x
  2. Step 2: Convert to fraction form
    210,380.60/315,573.69 = 70,139.27/x
  3. Step 3: Cross multiply
    210,380.60x = 315,573.69 × 70,139.27
  4. Step 4: Simplify right side
    210,380.60x = 22,134,109,299.76
  5. Step 5: Solve for x
    x = 22,134,109,299.76/210,380.60
  6. Step 6: Final answer
    x = 105,209.84

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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.