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Finding the Fourth Proportional to 309,587.85, 427,227.30 and 173,656.08

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Solution

The fourth proportional to 309,587.85, 427,227.30 and 173,656.08 is: 239,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,587.85 : 427,227.30 = 173,656.08 : x
  2. Step 2: Convert to fraction form
    309,587.85/427,227.30 = 173,656.08/x
  3. Step 3: Cross multiply
    309,587.85x = 427,227.30 × 173,656.08
  4. Step 4: Simplify right side
    309,587.85x = 74,190,618,186.98
  5. Step 5: Solve for x
    x = 74,190,618,186.98/309,587.85
  6. Step 6: Final answer
    x = 239,643.18

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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.