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Finding the Fourth Proportional to 309,656.04, 427,330.20 and 173,720.20

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Solution

The fourth proportional to 309,656.04, 427,330.20 and 173,720.20 is: 239,736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,656.04 : 427,330.20 = 173,720.20 : x
  2. Step 2: Convert to fraction form
    309,656.04/427,330.20 = 173,720.20/x
  3. Step 3: Cross multiply
    309,656.04x = 427,330.20 × 173,720.20
  4. Step 4: Simplify right side
    309,656.04x = 74,235,887,810.04
  5. Step 5: Solve for x
    x = 74,235,887,810.04/309,656.04
  6. Step 6: Final answer
    x = 239,736.61

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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.