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Finding the Fourth Proportional to 351,430.62, 484,611.78 and 300,611.64

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Solution

The fourth proportional to 351,430.62, 484,611.78 and 300,611.64 is: 414,534.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,430.62 : 484,611.78 = 300,611.64 : x
  2. Step 2: Convert to fraction form
    351,430.62/484,611.78 = 300,611.64/x
  3. Step 3: Cross multiply
    351,430.62x = 484,611.78 × 300,611.64
  4. Step 4: Simplify right side
    351,430.62x = 145,679,941,949.12
  5. Step 5: Solve for x
    x = 145,679,941,949.12/351,430.62
  6. Step 6: Final answer
    x = 414,534.00

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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.