Home / 211,981.10-292,461.50-131,379.21

Finding the Fourth Proportional to 211,981.10, 292,461.50 and 131,379.21

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Solution

The fourth proportional to 211,981.10, 292,461.50 and 131,379.21 is: 181,258.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,981.10 : 292,461.50 = 131,379.21 : x
  2. Step 2: Convert to fraction form
    211,981.10/292,461.50 = 131,379.21/x
  3. Step 3: Cross multiply
    211,981.10x = 292,461.50 × 131,379.21
  4. Step 4: Simplify right side
    211,981.10x = 38,423,361,153.86
  5. Step 5: Solve for x
    x = 38,423,361,153.86/211,981.10
  6. Step 6: Final answer
    x = 181,258.43

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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.