Home / 353,178.96-530,004-128,539.33

Finding the Fourth Proportional to 353,178.96, 530,004 and 128,539.33

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Solution

The fourth proportional to 353,178.96, 530,004 and 128,539.33 is: 192,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,178.96 : 530,004 = 128,539.33 : x
  2. Step 2: Convert to fraction form
    353,178.96/530,004 = 128,539.33/x
  3. Step 3: Cross multiply
    353,178.96x = 530,004 × 128,539.33
  4. Step 4: Simplify right side
    353,178.96x = 68,126,359,057.32
  5. Step 5: Solve for x
    x = 68,126,359,057.32/353,178.96
  6. Step 6: Final answer
    x = 192,894.73

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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.