Home / 305,665.35-458,350.55-128,124.69

Finding the Fourth Proportional to 305,665.35, 458,350.55 and 128,124.69

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Solution

The fourth proportional to 305,665.35, 458,350.55 and 128,124.69 is: 192,125.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,665.35 : 458,350.55 = 128,124.69 : x
  2. Step 2: Convert to fraction form
    305,665.35/458,350.55 = 128,124.69/x
  3. Step 3: Cross multiply
    305,665.35x = 458,350.55 × 128,124.69
  4. Step 4: Simplify right side
    305,665.35x = 58,726,020,251.11
  5. Step 5: Solve for x
    x = 58,726,020,251.11/305,665.35
  6. Step 6: Final answer
    x = 192,125.21

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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.