Home / 380,767.77-571,077.81-144,128.90

Finding the Fourth Proportional to 380,767.77, 571,077.81 and 144,128.90

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Solution

The fourth proportional to 380,767.77, 571,077.81 and 144,128.90 is: 216,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,767.77 : 571,077.81 = 144,128.90 : x
  2. Step 2: Convert to fraction form
    380,767.77/571,077.81 = 144,128.90/x
  3. Step 3: Cross multiply
    380,767.77x = 571,077.81 × 144,128.90
  4. Step 4: Simplify right side
    380,767.77x = 82,308,817,997.40
  5. Step 5: Solve for x
    x = 82,308,817,997.40/380,767.77
  6. Step 6: Final answer
    x = 216,165.40

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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.