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Finding the Fourth Proportional to 309,825.98, 427,558.64 and 173,859.62

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Solution

The fourth proportional to 309,825.98, 427,558.64 and 173,859.62 is: 239,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,825.98 : 427,558.64 = 173,859.62 : x
  2. Step 2: Convert to fraction form
    309,825.98/427,558.64 = 173,859.62/x
  3. Step 3: Cross multiply
    309,825.98x = 427,558.64 × 173,859.62
  4. Step 4: Simplify right side
    309,825.98x = 74,335,182,678.12
  5. Step 5: Solve for x
    x = 74,335,182,678.12/309,825.98
  6. Step 6: Final answer
    x = 239,925.60

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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.