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Finding the Fourth Proportional to 171,072,643.80, 256,608,965.70 and 167,671,421.40

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Solution

The fourth proportional to 171,072,643.80, 256,608,965.70 and 167,671,421.40 is: 251,507,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,072,643.80 : 256,608,965.70 = 167,671,421.40 : x
  2. Step 2: Convert to fraction form
    171,072,643.80/256,608,965.70 = 167,671,421.40/x
  3. Step 3: Cross multiply
    171,072,643.80x = 256,608,965.70 × 167,671,421.40
  4. Step 4: Simplify right side
    171,072,643.80x = 43,025,990,022,902,848
  5. Step 5: Solve for x
    x = 43,025,990,022,902,848/171,072,643.80
  6. Step 6: Final answer
    x = 251,507,132.10

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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.