Home / 305,668.34-458,355.04-128,127.68

Finding the Fourth Proportional to 305,668.34, 458,355.04 and 128,127.68

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Solution

The fourth proportional to 305,668.34, 458,355.04 and 128,127.68 is: 192,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,668.34 : 458,355.04 = 128,127.68 : x
  2. Step 2: Convert to fraction form
    305,668.34/458,355.04 = 128,127.68/x
  3. Step 3: Cross multiply
    305,668.34x = 458,355.04 × 128,127.68
  4. Step 4: Simplify right side
    305,668.34x = 58,727,967,891.51
  5. Step 5: Solve for x
    x = 58,727,967,891.51/305,668.34
  6. Step 6: Final answer
    x = 192,129.70

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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.