Home / 305,780.04-458,737.20-128,195.64

Finding the Fourth Proportional to 305,780.04, 458,737.20 and 128,195.64

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Solution

The fourth proportional to 305,780.04, 458,737.20 and 128,195.64 is: 192,321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,780.04 : 458,737.20 = 128,195.64 : x
  2. Step 2: Convert to fraction form
    305,780.04/458,737.20 = 128,195.64/x
  3. Step 3: Cross multiply
    305,780.04x = 458,737.20 × 128,195.64
  4. Step 4: Simplify right side
    305,780.04x = 58,808,108,945.81
  5. Step 5: Solve for x
    x = 58,808,108,945.81/305,780.04
  6. Step 6: Final answer
    x = 192,321.61

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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.