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Finding the Fourth Proportional to 316,459.32, 436,713.54 and 173,218.08

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Solution

The fourth proportional to 316,459.32, 436,713.54 and 173,218.08 is: 239,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,459.32 : 436,713.54 = 173,218.08 : x
  2. Step 2: Convert to fraction form
    316,459.32/436,713.54 = 173,218.08/x
  3. Step 3: Cross multiply
    316,459.32x = 436,713.54 × 173,218.08
  4. Step 4: Simplify right side
    316,459.32x = 75,646,680,908.80
  5. Step 5: Solve for x
    x = 75,646,680,908.80/316,459.32
  6. Step 6: Final answer
    x = 239,040.77

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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.