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Finding the Fourth Proportional to 556,640.20, 835,154.70 and 201,665.80

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Solution

The fourth proportional to 556,640.20, 835,154.70 and 201,665.80 is: 302,569.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,640.20 : 835,154.70 = 201,665.80 : x
  2. Step 2: Convert to fraction form
    556,640.20/835,154.70 = 201,665.80/x
  3. Step 3: Cross multiply
    556,640.20x = 835,154.70 × 201,665.80
  4. Step 4: Simplify right side
    556,640.20x = 168,422,140,699.26
  5. Step 5: Solve for x
    x = 168,422,140,699.26/556,640.20
  6. Step 6: Final answer
    x = 302,569.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.