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Finding the Fourth Proportional to 306,643.88, 459,985.30 and 96,290.12

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Solution

The fourth proportional to 306,643.88, 459,985.30 and 96,290.12 is: 144,441.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,643.88 : 459,985.30 = 96,290.12 : x
  2. Step 2: Convert to fraction form
    306,643.88/459,985.30 = 96,290.12/x
  3. Step 3: Cross multiply
    306,643.88x = 459,985.30 × 96,290.12
  4. Step 4: Simplify right side
    306,643.88x = 44,292,040,644.47
  5. Step 5: Solve for x
    x = 44,292,040,644.47/306,643.88
  6. Step 6: Final answer
    x = 144,441.30

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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.