Home / 379,332.09-523,490.99-209,575.53

Finding the Fourth Proportional to 379,332.09, 523,490.99 and 209,575.53

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Solution

The fourth proportional to 379,332.09, 523,490.99 and 209,575.53 is: 289,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,332.09 : 523,490.99 = 209,575.53 : x
  2. Step 2: Convert to fraction form
    379,332.09/523,490.99 = 209,575.53/x
  3. Step 3: Cross multiply
    379,332.09x = 523,490.99 × 209,575.53
  4. Step 4: Simplify right side
    379,332.09x = 109,710,900,631.60
  5. Step 5: Solve for x
    x = 109,710,900,631.60/379,332.09
  6. Step 6: Final answer
    x = 289,221.25

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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.