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Finding the Fourth Proportional to 411,420.10, 617,130.15 and 115,932.10

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Solution

The fourth proportional to 411,420.10, 617,130.15 and 115,932.10 is: 173,898.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,420.10 : 617,130.15 = 115,932.10 : x
  2. Step 2: Convert to fraction form
    411,420.10/617,130.15 = 115,932.10/x
  3. Step 3: Cross multiply
    411,420.10x = 617,130.15 × 115,932.10
  4. Step 4: Simplify right side
    411,420.10x = 71,545,194,262.82
  5. Step 5: Solve for x
    x = 71,545,194,262.82/411,420.10
  6. Step 6: Final answer
    x = 173,898.15

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1.5x scale

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.