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Finding the Fourth Proportional to 386,322.80, 579,484.20 and 173,090.30

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Solution

The fourth proportional to 386,322.80, 579,484.20 and 173,090.30 is: 259,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,322.80 : 579,484.20 = 173,090.30 : x
  2. Step 2: Convert to fraction form
    386,322.80/579,484.20 = 173,090.30/x
  3. Step 3: Cross multiply
    386,322.80x = 579,484.20 × 173,090.30
  4. Step 4: Simplify right side
    386,322.80x = 100,303,094,023.26
  5. Step 5: Solve for x
    x = 100,303,094,023.26/386,322.80
  6. Step 6: Final answer
    x = 259,635.45

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Similar ratio
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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.