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Finding the Fourth Proportional to 376,877.49, 519,571.30 and 300,655.28

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Solution

The fourth proportional to 376,877.49, 519,571.30 and 300,655.28 is: 414,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,877.49 : 519,571.30 = 300,655.28 : x
  2. Step 2: Convert to fraction form
    376,877.49/519,571.30 = 300,655.28/x
  3. Step 3: Cross multiply
    376,877.49x = 519,571.30 × 300,655.28
  4. Step 4: Simplify right side
    376,877.49x = 156,211,854,681.46
  5. Step 5: Solve for x
    x = 156,211,854,681.46/376,877.49
  6. Step 6: Final answer
    x = 414,489.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.