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Finding the Fourth Proportional to 383,355.48, 528,514.38 and 268,479.48

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Solution

The fourth proportional to 383,355.48, 528,514.38 and 268,479.48 is: 370,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,355.48 : 528,514.38 = 268,479.48 : x
  2. Step 2: Convert to fraction form
    383,355.48/528,514.38 = 268,479.48/x
  3. Step 3: Cross multiply
    383,355.48x = 528,514.38 × 268,479.48
  4. Step 4: Simplify right side
    383,355.48x = 141,895,265,914.92
  5. Step 5: Solve for x
    x = 141,895,265,914.92/383,355.48
  6. Step 6: Final answer
    x = 370,140.18

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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.