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Finding the Fourth Proportional to 659,399.55, 989,088.42 and 210,114.32

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Solution

The fourth proportional to 659,399.55, 989,088.42 and 210,114.32 is: 315,168.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,399.55 : 989,088.42 = 210,114.32 : x
  2. Step 2: Convert to fraction form
    659,399.55/989,088.42 = 210,114.32/x
  3. Step 3: Cross multiply
    659,399.55x = 989,088.42 × 210,114.32
  4. Step 4: Simplify right side
    659,399.55x = 207,821,635,842.73
  5. Step 5: Solve for x
    x = 207,821,635,842.73/659,399.55
  6. Step 6: Final answer
    x = 315,168.00

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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.