Home / 228,543,152.34-315,409,001.28-129,441,529.11

Finding the Fourth Proportional to 228,543,152.34, 315,409,001.28 and 129,441,529.11

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Solution

The fourth proportional to 228,543,152.34, 315,409,001.28 and 129,441,529.11 is: 178,640,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,543,152.34 : 315,409,001.28 = 129,441,529.11 : x
  2. Step 2: Convert to fraction form
    228,543,152.34/315,409,001.28 = 129,441,529.11/x
  3. Step 3: Cross multiply
    228,543,152.34x = 315,409,001.28 × 129,441,529.11
  4. Step 4: Simplify right side
    228,543,152.34x = 40,827,023,420,741,144
  5. Step 5: Solve for x
    x = 40,827,023,420,741,144/228,543,152.34
  6. Step 6: Final answer
    x = 178,640,326.79

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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.