Home / 289,030.36-398,972.64-193,502.20

Finding the Fourth Proportional to 289,030.36, 398,972.64 and 193,502.20

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Solution

The fourth proportional to 289,030.36, 398,972.64 and 193,502.20 is: 267,107.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,030.36 : 398,972.64 = 193,502.20 : x
  2. Step 2: Convert to fraction form
    289,030.36/398,972.64 = 193,502.20/x
  3. Step 3: Cross multiply
    289,030.36x = 398,972.64 × 193,502.20
  4. Step 4: Simplify right side
    289,030.36x = 77,202,083,579.81
  5. Step 5: Solve for x
    x = 77,202,083,579.81/289,030.36
  6. Step 6: Final answer
    x = 267,107.18

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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.