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Finding the Fourth Proportional to 251,197.95, 346,657.10 and 136,478.87

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Solution

The fourth proportional to 251,197.95, 346,657.10 and 136,478.87 is: 188,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,197.95 : 346,657.10 = 136,478.87 : x
  2. Step 2: Convert to fraction form
    251,197.95/346,657.10 = 136,478.87/x
  3. Step 3: Cross multiply
    251,197.95x = 346,657.10 × 136,478.87
  4. Step 4: Simplify right side
    251,197.95x = 47,311,369,285.48
  5. Step 5: Solve for x
    x = 47,311,369,285.48/251,197.95
  6. Step 6: Final answer
    x = 188,342.98

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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.