Home / 380,688.50-571,041.94-127,972.28

Finding the Fourth Proportional to 380,688.50, 571,041.94 and 127,972.28

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Solution

The fourth proportional to 380,688.50, 571,041.94 and 127,972.28 is: 191,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,688.50 : 571,041.94 = 127,972.28 : x
  2. Step 2: Convert to fraction form
    380,688.50/571,041.94 = 127,972.28/x
  3. Step 3: Cross multiply
    380,688.50x = 571,041.94 × 127,972.28
  4. Step 4: Simplify right side
    380,688.50x = 73,077,539,037.42
  5. Step 5: Solve for x
    x = 73,077,539,037.42/380,688.50
  6. Step 6: Final answer
    x = 191,961.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.