Home / 251,465.15-347,014.98-138,287.90

Finding the Fourth Proportional to 251,465.15, 347,014.98 and 138,287.90

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Solution

The fourth proportional to 251,465.15, 347,014.98 and 138,287.90 is: 190,833.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,465.15 : 347,014.98 = 138,287.90 : x
  2. Step 2: Convert to fraction form
    251,465.15/347,014.98 = 138,287.90/x
  3. Step 3: Cross multiply
    251,465.15x = 347,014.98 × 138,287.90
  4. Step 4: Simplify right side
    251,465.15x = 47,987,971,117.67
  5. Step 5: Solve for x
    x = 47,987,971,117.67/251,465.15
  6. Step 6: Final answer
    x = 190,833.49

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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.