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Finding the Fourth Proportional to 316,347.90, 436,560.03 and 173,107.89

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Solution

The fourth proportional to 316,347.90, 436,560.03 and 173,107.89 is: 238,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,347.90 : 436,560.03 = 173,107.89 : x
  2. Step 2: Convert to fraction form
    316,347.90/436,560.03 = 173,107.89/x
  3. Step 3: Cross multiply
    316,347.90x = 436,560.03 × 173,107.89
  4. Step 4: Simplify right side
    316,347.90x = 75,571,985,651.64
  5. Step 5: Solve for x
    x = 75,571,985,651.64/316,347.90
  6. Step 6: Final answer
    x = 238,888.85

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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.