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Finding the Fourth Proportional to 299,852.61, 449,856.75 and 89,490.55

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Solution

The fourth proportional to 299,852.61, 449,856.75 and 89,490.55 is: 134,259.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,852.61 : 449,856.75 = 89,490.55 : x
  2. Step 2: Convert to fraction form
    299,852.61/449,856.75 = 89,490.55/x
  3. Step 3: Cross multiply
    299,852.61x = 449,856.75 × 89,490.55
  4. Step 4: Simplify right side
    299,852.61x = 40,257,927,978.71
  5. Step 5: Solve for x
    x = 40,257,927,978.71/299,852.61
  6. Step 6: Final answer
    x = 134,259.05

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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.