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Finding the Fourth Proportional to 347,792.80, 520,522.80 and 305,802.40

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Solution

The fourth proportional to 347,792.80, 520,522.80 and 305,802.40 is: 457,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,792.80 : 520,522.80 = 305,802.40 : x
  2. Step 2: Convert to fraction form
    347,792.80/520,522.80 = 305,802.40/x
  3. Step 3: Cross multiply
    347,792.80x = 520,522.80 × 305,802.40
  4. Step 4: Simplify right side
    347,792.80x = 159,177,121,494.72
  5. Step 5: Solve for x
    x = 159,177,121,494.72/347,792.80
  6. Step 6: Final answer
    x = 457,678.02

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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.