Home / 172,455,438.30-258,683,157.45-155,449,326.30

Finding the Fourth Proportional to 172,455,438.30, 258,683,157.45 and 155,449,326.30

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Solution

The fourth proportional to 172,455,438.30, 258,683,157.45 and 155,449,326.30 is: 233,173,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,455,438.30 : 258,683,157.45 = 155,449,326.30 : x
  2. Step 2: Convert to fraction form
    172,455,438.30/258,683,157.45 = 155,449,326.30/x
  3. Step 3: Cross multiply
    172,455,438.30x = 258,683,157.45 × 155,449,326.30
  4. Step 4: Simplify right side
    172,455,438.30x = 40,212,122,550,759,328
  5. Step 5: Solve for x
    x = 40,212,122,550,759,328/172,455,438.30
  6. Step 6: Final answer
    x = 233,173,989.45

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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.