Home / 228,631.03-315,664.80-142,720.81

Finding the Fourth Proportional to 228,631.03, 315,664.80 and 142,720.81

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Solution

The fourth proportional to 228,631.03, 315,664.80 and 142,720.81 is: 197,050.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,631.03 : 315,664.80 = 142,720.81 : x
  2. Step 2: Convert to fraction form
    228,631.03/315,664.80 = 142,720.81/x
  3. Step 3: Cross multiply
    228,631.03x = 315,664.80 × 142,720.81
  4. Step 4: Simplify right side
    228,631.03x = 45,051,934,620.12
  5. Step 5: Solve for x
    x = 45,051,934,620.12/228,631.03
  6. Step 6: Final answer
    x = 197,050.83

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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.