Home / 290,566.72-436,506.23-172,315.63

Finding the Fourth Proportional to 290,566.72, 436,506.23 and 172,315.63

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Solution

The fourth proportional to 290,566.72, 436,506.23 and 172,315.63 is: 258,862.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,566.72 : 436,506.23 = 172,315.63 : x
  2. Step 2: Convert to fraction form
    290,566.72/436,506.23 = 172,315.63/x
  3. Step 3: Cross multiply
    290,566.72x = 436,506.23 × 172,315.63
  4. Step 4: Simplify right side
    290,566.72x = 75,216,846,021.37
  5. Step 5: Solve for x
    x = 75,216,846,021.37/290,566.72
  6. Step 6: Final answer
    x = 258,862.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.