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Finding the Fourth Proportional to 375,416.66, 563,120.23 and 91,109.55

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Solution

The fourth proportional to 375,416.66, 563,120.23 and 91,109.55 is: 136,663.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,416.66 : 563,120.23 = 91,109.55 : x
  2. Step 2: Convert to fraction form
    375,416.66/563,120.23 = 91,109.55/x
  3. Step 3: Cross multiply
    375,416.66x = 563,120.23 × 91,109.55
  4. Step 4: Simplify right side
    375,416.66x = 51,305,630,751.20
  5. Step 5: Solve for x
    x = 51,305,630,751.20/375,416.66
  6. Step 6: Final answer
    x = 136,663.17

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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.