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Finding the Fourth Proportional to 306,476.88, 459,715.40 and 84,860.88

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Solution

The fourth proportional to 306,476.88, 459,715.40 and 84,860.88 is: 127,291.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,476.88 : 459,715.40 = 84,860.88 : x
  2. Step 2: Convert to fraction form
    306,476.88/459,715.40 = 84,860.88/x
  3. Step 3: Cross multiply
    306,476.88x = 459,715.40 × 84,860.88
  4. Step 4: Simplify right side
    306,476.88x = 39,011,853,393.55
  5. Step 5: Solve for x
    x = 39,011,853,393.55/306,476.88
  6. Step 6: Final answer
    x = 127,291.34

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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.