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Finding the Fourth Proportional to 251,011.76, 346,398.64 and 137,836.94

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Solution

The fourth proportional to 251,011.76, 346,398.64 and 137,836.94 is: 190,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,011.76 : 346,398.64 = 137,836.94 : x
  2. Step 2: Convert to fraction form
    251,011.76/346,398.64 = 137,836.94/x
  3. Step 3: Cross multiply
    251,011.76x = 346,398.64 × 137,836.94
  4. Step 4: Simplify right side
    251,011.76x = 47,746,528,557.76
  5. Step 5: Solve for x
    x = 47,746,528,557.76/251,011.76
  6. Step 6: Final answer
    x = 190,216.30

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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.