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Finding the Fourth Proportional to 316,506.40, 436,783.98 and 173,264.02

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Solution

The fourth proportional to 316,506.40, 436,783.98 and 173,264.02 is: 239,107.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,506.40 : 436,783.98 = 173,264.02 : x
  2. Step 2: Convert to fraction form
    316,506.40/436,783.98 = 173,264.02/x
  3. Step 3: Cross multiply
    316,506.40x = 436,783.98 × 173,264.02
  4. Step 4: Simplify right side
    316,506.40x = 75,678,948,246.40
  5. Step 5: Solve for x
    x = 75,678,948,246.40/316,506.40
  6. Step 6: Final answer
    x = 239,107.17

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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.