Home / 228,747.38-315,595.76-138,068.91

Finding the Fourth Proportional to 228,747.38, 315,595.76 and 138,068.91

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Solution

The fourth proportional to 228,747.38, 315,595.76 and 138,068.91 is: 190,489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,747.38 : 315,595.76 = 138,068.91 : x
  2. Step 2: Convert to fraction form
    228,747.38/315,595.76 = 138,068.91/x
  3. Step 3: Cross multiply
    228,747.38x = 315,595.76 × 138,068.91
  4. Step 4: Simplify right side
    228,747.38x = 43,573,961,893.48
  5. Step 5: Solve for x
    x = 43,573,961,893.48/228,747.38
  6. Step 6: Final answer
    x = 190,489.45

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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.