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Finding the Fourth Proportional to 228,080.80, 342,315.60 and 101,915.20

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Solution

The fourth proportional to 228,080.80, 342,315.60 and 101,915.20 is: 152,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,080.80 : 342,315.60 = 101,915.20 : x
  2. Step 2: Convert to fraction form
    228,080.80/342,315.60 = 101,915.20/x
  3. Step 3: Cross multiply
    228,080.80x = 342,315.60 × 101,915.20
  4. Step 4: Simplify right side
    228,080.80x = 34,887,162,837.12
  5. Step 5: Solve for x
    x = 34,887,162,837.12/228,080.80
  6. Step 6: Final answer
    x = 152,959.67

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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.