Home / 493,921.38-740,885.70-138,971.28

Finding the Fourth Proportional to 493,921.38, 740,885.70 and 138,971.28

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Solution

The fourth proportional to 493,921.38, 740,885.70 and 138,971.28 is: 208,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,921.38 : 740,885.70 = 138,971.28 : x
  2. Step 2: Convert to fraction form
    493,921.38/740,885.70 = 138,971.28/x
  3. Step 3: Cross multiply
    493,921.38x = 740,885.70 × 138,971.28
  4. Step 4: Simplify right side
    493,921.38x = 102,961,834,062.70
  5. Step 5: Solve for x
    x = 102,961,834,062.70/493,921.38
  6. Step 6: Final answer
    x = 208,457.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.