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Finding the Fourth Proportional to 316,284.64, 436,479.11 and 173,047.76

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Solution

The fourth proportional to 316,284.64, 436,479.11 and 173,047.76 is: 238,809.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,284.64 : 436,479.11 = 173,047.76 : x
  2. Step 2: Convert to fraction form
    316,284.64/436,479.11 = 173,047.76/x
  3. Step 3: Cross multiply
    316,284.64x = 436,479.11 × 173,047.76
  4. Step 4: Simplify right side
    316,284.64x = 75,531,732,272.29
  5. Step 5: Solve for x
    x = 75,531,732,272.29/316,284.64
  6. Step 6: Final answer
    x = 238,809.36

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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.