Home / 380,847.36-571,320.18-128,018.82

Finding the Fourth Proportional to 380,847.36, 571,320.18 and 128,018.82

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Solution

The fourth proportional to 380,847.36, 571,320.18 and 128,018.82 is: 192,044.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,847.36 : 571,320.18 = 128,018.82 : x
  2. Step 2: Convert to fraction form
    380,847.36/571,320.18 = 128,018.82/x
  3. Step 3: Cross multiply
    380,847.36x = 571,320.18 × 128,018.82
  4. Step 4: Simplify right side
    380,847.36x = 73,139,735,285.79
  5. Step 5: Solve for x
    x = 73,139,735,285.79/380,847.36
  6. Step 6: Final answer
    x = 192,044.75

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1.5x scale

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.