Home / 210,421.27-315,633.11-70,179.49

Finding the Fourth Proportional to 210,421.27, 315,633.11 and 70,179.49

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Solution

The fourth proportional to 210,421.27, 315,633.11 and 70,179.49 is: 105,269.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,421.27 : 315,633.11 = 70,179.49 : x
  2. Step 2: Convert to fraction form
    210,421.27/315,633.11 = 70,179.49/x
  3. Step 3: Cross multiply
    210,421.27x = 315,633.11 × 70,179.49
  4. Step 4: Simplify right side
    210,421.27x = 22,150,970,686.91
  5. Step 5: Solve for x
    x = 22,150,970,686.91/210,421.27
  6. Step 6: Final answer
    x = 105,269.64

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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.