Home / 305,578.16-458,417.76-128,098.40

Finding the Fourth Proportional to 305,578.16, 458,417.76 and 128,098.40

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Solution

The fourth proportional to 305,578.16, 458,417.76 and 128,098.40 is: 192,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,578.16 : 458,417.76 = 128,098.40 : x
  2. Step 2: Convert to fraction form
    305,578.16/458,417.76 = 128,098.40/x
  3. Step 3: Cross multiply
    305,578.16x = 458,417.76 × 128,098.40
  4. Step 4: Simplify right side
    305,578.16x = 58,722,581,587.58
  5. Step 5: Solve for x
    x = 58,722,581,587.58/305,578.16
  6. Step 6: Final answer
    x = 192,168.78

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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.