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Finding the Fourth Proportional to 316,193.94, 436,338.36 and 172,950.89

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Solution

The fourth proportional to 316,193.94, 436,338.36 and 172,950.89 is: 238,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,193.94 : 436,338.36 = 172,950.89 : x
  2. Step 2: Convert to fraction form
    316,193.94/436,338.36 = 172,950.89/x
  3. Step 3: Cross multiply
    316,193.94x = 436,338.36 × 172,950.89
  4. Step 4: Simplify right side
    316,193.94x = 75,465,105,521.45
  5. Step 5: Solve for x
    x = 75,465,105,521.45/316,193.94
  6. Step 6: Final answer
    x = 238,667.15

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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.