Home / 315,788.21-435,782.59-172,545.18

Finding the Fourth Proportional to 315,788.21, 435,782.59 and 172,545.18

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Solution

The fourth proportional to 315,788.21, 435,782.59 and 172,545.18 is: 238,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,788.21 : 435,782.59 = 172,545.18 : x
  2. Step 2: Convert to fraction form
    315,788.21/435,782.59 = 172,545.18/x
  3. Step 3: Cross multiply
    315,788.21x = 435,782.59 × 172,545.18
  4. Step 4: Simplify right side
    315,788.21x = 75,192,185,432.42
  5. Step 5: Solve for x
    x = 75,192,185,432.42/315,788.21
  6. Step 6: Final answer
    x = 238,109.54

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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.