Home / 214,297.09-321,445.64-72,130.46

Finding the Fourth Proportional to 214,297.09, 321,445.64 and 72,130.46

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Solution

The fourth proportional to 214,297.09, 321,445.64 and 72,130.46 is: 108,195.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,297.09 : 321,445.64 = 72,130.46 : x
  2. Step 2: Convert to fraction form
    214,297.09/321,445.64 = 72,130.46/x
  3. Step 3: Cross multiply
    214,297.09x = 321,445.64 × 72,130.46
  4. Step 4: Simplify right side
    214,297.09x = 23,186,023,359.47
  5. Step 5: Solve for x
    x = 23,186,023,359.47/214,297.09
  6. Step 6: Final answer
    x = 108,195.70

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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.