Home / 211,861.85-292,420.26-121,270.32

Finding the Fourth Proportional to 211,861.85, 292,420.26 and 121,270.32

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Solution

The fourth proportional to 211,861.85, 292,420.26 and 121,270.32 is: 167,382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,861.85 : 292,420.26 = 121,270.32 : x
  2. Step 2: Convert to fraction form
    211,861.85/292,420.26 = 121,270.32/x
  3. Step 3: Cross multiply
    211,861.85x = 292,420.26 × 121,270.32
  4. Step 4: Simplify right side
    211,861.85x = 35,461,898,504.68
  5. Step 5: Solve for x
    x = 35,461,898,504.68/211,861.85
  6. Step 6: Final answer
    x = 167,382.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.