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Finding the Fourth Proportional to 228,860.24, 315,827.52 and 128,258.24

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Solution

The fourth proportional to 228,860.24, 315,827.52 and 128,258.24 is: 176,996.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,860.24 : 315,827.52 = 128,258.24 : x
  2. Step 2: Convert to fraction form
    228,860.24/315,827.52 = 128,258.24/x
  3. Step 3: Cross multiply
    228,860.24x = 315,827.52 × 128,258.24
  4. Step 4: Simplify right side
    228,860.24x = 40,507,481,858.76
  5. Step 5: Solve for x
    x = 40,507,481,858.76/228,860.24
  6. Step 6: Final answer
    x = 176,996.59

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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.