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Finding the Fourth Proportional to 228,312.20, 342,468.30 and 103,653.20

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Solution

The fourth proportional to 228,312.20, 342,468.30 and 103,653.20 is: 155,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,312.20 : 342,468.30 = 103,653.20 : x
  2. Step 2: Convert to fraction form
    228,312.20/342,468.30 = 103,653.20/x
  3. Step 3: Cross multiply
    228,312.20x = 342,468.30 × 103,653.20
  4. Step 4: Simplify right side
    228,312.20x = 35,497,935,193.56
  5. Step 5: Solve for x
    x = 35,497,935,193.56/228,312.20
  6. Step 6: Final answer
    x = 155,479.80

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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.