Home / 251,387.36-346,915.86-138,217.40

Finding the Fourth Proportional to 251,387.36, 346,915.86 and 138,217.40

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Solution

The fourth proportional to 251,387.36, 346,915.86 and 138,217.40 is: 190,740.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,387.36 : 346,915.86 = 138,217.40 : x
  2. Step 2: Convert to fraction form
    251,387.36/346,915.86 = 138,217.40/x
  3. Step 3: Cross multiply
    251,387.36x = 346,915.86 × 138,217.40
  4. Step 4: Simplify right side
    251,387.36x = 47,949,808,187.96
  5. Step 5: Solve for x
    x = 47,949,808,187.96/251,387.36
  6. Step 6: Final answer
    x = 190,740.73

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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.