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Finding the Fourth Proportional to 365,707.57, 548,449.53 and 128,994.89

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Solution

The fourth proportional to 365,707.57, 548,449.53 and 128,994.89 is: 193,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,707.57 : 548,449.53 = 128,994.89 : x
  2. Step 2: Convert to fraction form
    365,707.57/548,449.53 = 128,994.89/x
  3. Step 3: Cross multiply
    365,707.57x = 548,449.53 × 128,994.89
  4. Step 4: Simplify right side
    365,707.57x = 70,747,186,792.90
  5. Step 5: Solve for x
    x = 70,747,186,792.90/365,707.57
  6. Step 6: Final answer
    x = 193,452.89

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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.