Home / 228,817.22-315,752.73-128,195.78

Finding the Fourth Proportional to 228,817.22, 315,752.73 and 128,195.78

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Solution

The fourth proportional to 228,817.22, 315,752.73 and 128,195.78 is: 176,901.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,817.22 : 315,752.73 = 128,195.78 : x
  2. Step 2: Convert to fraction form
    228,817.22/315,752.73 = 128,195.78/x
  3. Step 3: Cross multiply
    228,817.22x = 315,752.73 × 128,195.78
  4. Step 4: Simplify right side
    228,817.22x = 40,478,167,509.48
  5. Step 5: Solve for x
    x = 40,478,167,509.48/228,817.22
  6. Step 6: Final answer
    x = 176,901.75

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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.