Home / 211,979.72-292,518.24-121,336.40

Finding the Fourth Proportional to 211,979.72, 292,518.24 and 121,336.40

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Solution

The fourth proportional to 211,979.72, 292,518.24 and 121,336.40 is: 167,436.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,979.72 : 292,518.24 = 121,336.40 : x
  2. Step 2: Convert to fraction form
    211,979.72/292,518.24 = 121,336.40/x
  3. Step 3: Cross multiply
    211,979.72x = 292,518.24 × 121,336.40
  4. Step 4: Simplify right side
    211,979.72x = 35,493,108,713.34
  5. Step 5: Solve for x
    x = 35,493,108,713.34/211,979.72
  6. Step 6: Final answer
    x = 167,436.35

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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.