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Finding the Fourth Proportional to 383,521.92, 529,237.48 and 220,140.68

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Solution

The fourth proportional to 383,521.92, 529,237.48 and 220,140.68 is: 303,781.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,521.92 : 529,237.48 = 220,140.68 : x
  2. Step 2: Convert to fraction form
    383,521.92/529,237.48 = 220,140.68/x
  3. Step 3: Cross multiply
    383,521.92x = 529,237.48 × 220,140.68
  4. Step 4: Simplify right side
    383,521.92x = 116,506,698,728.69
  5. Step 5: Solve for x
    x = 116,506,698,728.69/383,521.92
  6. Step 6: Final answer
    x = 303,781.07

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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.