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Finding the Fourth Proportional to 316,555.65, 436,846.80 and 173,315.69

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Solution

The fourth proportional to 316,555.65, 436,846.80 and 173,315.69 is: 239,175.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,555.65 : 436,846.80 = 173,315.69 : x
  2. Step 2: Convert to fraction form
    316,555.65/436,846.80 = 173,315.69/x
  3. Step 3: Cross multiply
    316,555.65x = 436,846.80 × 173,315.69
  4. Step 4: Simplify right side
    316,555.65x = 75,712,404,566.29
  5. Step 5: Solve for x
    x = 75,712,404,566.29/316,555.65
  6. Step 6: Final answer
    x = 239,175.65

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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.