Home / 228,760.24-315,688.92-128,158.96

Finding the Fourth Proportional to 228,760.24, 315,688.92 and 128,158.96

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Solution

The fourth proportional to 228,760.24, 315,688.92 and 128,158.96 is: 176,859.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,760.24 : 315,688.92 = 128,158.96 : x
  2. Step 2: Convert to fraction form
    228,760.24/315,688.92 = 128,158.96/x
  3. Step 3: Cross multiply
    228,760.24x = 315,688.92 × 128,158.96
  4. Step 4: Simplify right side
    228,760.24x = 40,458,363,670.72
  5. Step 5: Solve for x
    x = 40,458,363,670.72/228,760.24
  6. Step 6: Final answer
    x = 176,859.25

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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.