Home / 379,428.06-523,590.16-209,651.25

Finding the Fourth Proportional to 379,428.06, 523,590.16 and 209,651.25

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Solution

The fourth proportional to 379,428.06, 523,590.16 and 209,651.25 is: 289,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,428.06 : 523,590.16 = 209,651.25 : x
  2. Step 2: Convert to fraction form
    379,428.06/523,590.16 = 209,651.25/x
  3. Step 3: Cross multiply
    379,428.06x = 523,590.16 × 209,651.25
  4. Step 4: Simplify right side
    379,428.06x = 109,771,331,531.70
  5. Step 5: Solve for x
    x = 109,771,331,531.70/379,428.06
  6. Step 6: Final answer
    x = 289,307.36

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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.