Home / 245,983.77-339,459.48-138,543.75

Finding the Fourth Proportional to 245,983.77, 339,459.48 and 138,543.75

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Solution

The fourth proportional to 245,983.77, 339,459.48 and 138,543.75 is: 191,191.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,983.77 : 339,459.48 = 138,543.75 : x
  2. Step 2: Convert to fraction form
    245,983.77/339,459.48 = 138,543.75/x
  3. Step 3: Cross multiply
    245,983.77x = 339,459.48 × 138,543.75
  4. Step 4: Simplify right side
    245,983.77x = 47,029,989,332.25
  5. Step 5: Solve for x
    x = 47,029,989,332.25/245,983.77
  6. Step 6: Final answer
    x = 191,191.43

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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.