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Finding the Fourth Proportional to 397,720.40, 596,177.40 and 197,733.20

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Solution

The fourth proportional to 397,720.40, 596,177.40 and 197,733.20 is: 296,399.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,720.40 : 596,177.40 = 197,733.20 : x
  2. Step 2: Convert to fraction form
    397,720.40/596,177.40 = 197,733.20/x
  3. Step 3: Cross multiply
    397,720.40x = 596,177.40 × 197,733.20
  4. Step 4: Simplify right side
    397,720.40x = 117,884,065,069.68
  5. Step 5: Solve for x
    x = 117,884,065,069.68/397,720.40
  6. Step 6: Final answer
    x = 296,399.34

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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.