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Finding the Fourth Proportional to 288,478.56, 398,099.88 and 173,823.60

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Solution

The fourth proportional to 288,478.56, 398,099.88 and 173,823.60 is: 239,876.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,478.56 : 398,099.88 = 173,823.60 : x
  2. Step 2: Convert to fraction form
    288,478.56/398,099.88 = 173,823.60/x
  3. Step 3: Cross multiply
    288,478.56x = 398,099.88 × 173,823.60
  4. Step 4: Simplify right side
    288,478.56x = 69,199,154,301.17
  5. Step 5: Solve for x
    x = 69,199,154,301.17/288,478.56
  6. Step 6: Final answer
    x = 239,876.25

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1.5x scale

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.