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Finding the Fourth Proportional to 347,726.40, 520,898.40 and 322,843.20

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Solution

The fourth proportional to 347,726.40, 520,898.40 and 322,843.20 is: 483,623.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,726.40 : 520,898.40 = 322,843.20 : x
  2. Step 2: Convert to fraction form
    347,726.40/520,898.40 = 322,843.20/x
  3. Step 3: Cross multiply
    347,726.40x = 520,898.40 × 322,843.20
  4. Step 4: Simplify right side
    347,726.40x = 168,168,506,330.88
  5. Step 5: Solve for x
    x = 168,168,506,330.88/347,726.40
  6. Step 6: Final answer
    x = 483,623.06

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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.