Home / 379,148.96-523,221.36-209,379.68

Finding the Fourth Proportional to 379,148.96, 523,221.36 and 209,379.68

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Solution

The fourth proportional to 379,148.96, 523,221.36 and 209,379.68 is: 288,941.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,148.96 : 523,221.36 = 209,379.68 : x
  2. Step 2: Convert to fraction form
    379,148.96/523,221.36 = 209,379.68/x
  3. Step 3: Cross multiply
    379,148.96x = 523,221.36 × 209,379.68
  4. Step 4: Simplify right side
    379,148.96x = 109,551,920,925.97
  5. Step 5: Solve for x
    x = 109,551,920,925.97/379,148.96
  6. Step 6: Final answer
    x = 288,941.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.