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Finding the Fourth Proportional to 351,430.72, 484,611.90 and 300,611.68

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Solution

The fourth proportional to 351,430.72, 484,611.90 and 300,611.68 is: 414,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,430.72 : 484,611.90 = 300,611.68 : x
  2. Step 2: Convert to fraction form
    351,430.72/484,611.90 = 300,611.68/x
  3. Step 3: Cross multiply
    351,430.72x = 484,611.90 × 300,611.68
  4. Step 4: Simplify right side
    351,430.72x = 145,679,997,406.99
  5. Step 5: Solve for x
    x = 145,679,997,406.99/351,430.72
  6. Step 6: Final answer
    x = 414,534.04

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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.