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Finding the Fourth Proportional to 379,567.52, 523,813.76 and 209,812.56

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Solution

The fourth proportional to 379,567.52, 523,813.76 and 209,812.56 is: 289,547.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,567.52 : 523,813.76 = 209,812.56 : x
  2. Step 2: Convert to fraction form
    379,567.52/523,813.76 = 209,812.56/x
  3. Step 3: Cross multiply
    379,567.52x = 523,813.76 × 209,812.56
  4. Step 4: Simplify right side
    379,567.52x = 109,902,705,948.83
  5. Step 5: Solve for x
    x = 109,902,705,948.83/379,567.52
  6. Step 6: Final answer
    x = 289,547.18

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1.5x scale

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.