Home / 228,749.38-315,598.52-138,070.92

Finding the Fourth Proportional to 228,749.38, 315,598.52 and 138,070.92

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Solution

The fourth proportional to 228,749.38, 315,598.52 and 138,070.92 is: 190,492.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,749.38 : 315,598.52 = 138,070.92 : x
  2. Step 2: Convert to fraction form
    228,749.38/315,598.52 = 138,070.92/x
  3. Step 3: Cross multiply
    228,749.38x = 315,598.52 × 138,070.92
  4. Step 4: Simplify right side
    228,749.38x = 43,574,978,007.04
  5. Step 5: Solve for x
    x = 43,574,978,007.04/228,749.38
  6. Step 6: Final answer
    x = 190,492.22

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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.