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Finding the Fourth Proportional to 251,008.48, 346,392.12 and 137,838.40

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Solution

The fourth proportional to 251,008.48, 346,392.12 and 137,838.40 is: 190,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,008.48 : 346,392.12 = 137,838.40 : x
  2. Step 2: Convert to fraction form
    251,008.48/346,392.12 = 137,838.40/x
  3. Step 3: Cross multiply
    251,008.48x = 346,392.12 × 137,838.40
  4. Step 4: Simplify right side
    251,008.48x = 47,746,135,593.41
  5. Step 5: Solve for x
    x = 47,746,135,593.41/251,008.48
  6. Step 6: Final answer
    x = 190,217.22

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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.