Home / 228,619.15-315,648.47-142,708.93

Finding the Fourth Proportional to 228,619.15, 315,648.47 and 142,708.93

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Solution

The fourth proportional to 228,619.15, 315,648.47 and 142,708.93 is: 197,034.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,619.15 : 315,648.47 = 142,708.93 : x
  2. Step 2: Convert to fraction form
    228,619.15/315,648.47 = 142,708.93/x
  3. Step 3: Cross multiply
    228,619.15x = 315,648.47 × 142,708.93
  4. Step 4: Simplify right side
    228,619.15x = 45,045,854,977.49
  5. Step 5: Solve for x
    x = 45,045,854,977.49/228,619.15
  6. Step 6: Final answer
    x = 197,034.48

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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.