Home / 379,239.90-523,355.67-209,492.70

Finding the Fourth Proportional to 379,239.90, 523,355.67 and 209,492.70

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Solution

The fourth proportional to 379,239.90, 523,355.67 and 209,492.70 is: 289,102.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,239.90 : 523,355.67 = 209,492.70 : x
  2. Step 2: Convert to fraction form
    379,239.90/523,355.67 = 209,492.70/x
  3. Step 3: Cross multiply
    379,239.90x = 523,355.67 × 209,492.70
  4. Step 4: Simplify right side
    379,239.90x = 109,639,192,368.61
  5. Step 5: Solve for x
    x = 109,639,192,368.61/379,239.90
  6. Step 6: Final answer
    x = 289,102.47

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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.