Home / 251,890.16-347,573.04-138,720.32

Finding the Fourth Proportional to 251,890.16, 347,573.04 and 138,720.32

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Solution

The fourth proportional to 251,890.16, 347,573.04 and 138,720.32 is: 191,414.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,890.16 : 347,573.04 = 138,720.32 : x
  2. Step 2: Convert to fraction form
    251,890.16/347,573.04 = 138,720.32/x
  3. Step 3: Cross multiply
    251,890.16x = 347,573.04 × 138,720.32
  4. Step 4: Simplify right side
    251,890.16x = 48,215,443,332.17
  5. Step 5: Solve for x
    x = 48,215,443,332.17/251,890.16
  6. Step 6: Final answer
    x = 191,414.56

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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.