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Finding the Fourth Proportional to 549,915.11, 758,912.60 and 308,275.30

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Solution

The fourth proportional to 549,915.11, 758,912.60 and 308,275.30 is: 425,436.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,915.11 : 758,912.60 = 308,275.30 : x
  2. Step 2: Convert to fraction form
    549,915.11/758,912.60 = 308,275.30/x
  3. Step 3: Cross multiply
    549,915.11x = 758,912.60 × 308,275.30
  4. Step 4: Simplify right side
    549,915.11x = 233,954,009,794.69
  5. Step 5: Solve for x
    x = 233,954,009,794.69/549,915.11
  6. Step 6: Final answer
    x = 425,436.59

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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.