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Finding the Fourth Proportional to 316,979.92, 437,443.50 and 173,739.93

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Solution

The fourth proportional to 316,979.92, 437,443.50 and 173,739.93 is: 239,767.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,979.92 : 437,443.50 = 173,739.93 : x
  2. Step 2: Convert to fraction form
    316,979.92/437,443.50 = 173,739.93/x
  3. Step 3: Cross multiply
    316,979.92x = 437,443.50 × 173,739.93
  4. Step 4: Simplify right side
    316,979.92x = 76,001,403,068.96
  5. Step 5: Solve for x
    x = 76,001,403,068.96/316,979.92
  6. Step 6: Final answer
    x = 239,767.25

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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.