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Finding the Fourth Proportional to 604,611.40, 906,917.10 and 155,331.40

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Solution

The fourth proportional to 604,611.40, 906,917.10 and 155,331.40 is: 232,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,611.40 : 906,917.10 = 155,331.40 : x
  2. Step 2: Convert to fraction form
    604,611.40/906,917.10 = 155,331.40/x
  3. Step 3: Cross multiply
    604,611.40x = 906,917.10 × 155,331.40
  4. Step 4: Simplify right side
    604,611.40x = 140,872,702,826.94
  5. Step 5: Solve for x
    x = 140,872,702,826.94/604,611.40
  6. Step 6: Final answer
    x = 232,997.10

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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.