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Finding the Fourth Proportional to 575,165.40, 863,136.90 and 322,445.40

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Solution

The fourth proportional to 575,165.40, 863,136.90 and 322,445.40 is: 483,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,165.40 : 863,136.90 = 322,445.40 : x
  2. Step 2: Convert to fraction form
    575,165.40/863,136.90 = 322,445.40/x
  3. Step 3: Cross multiply
    575,165.40x = 863,136.90 × 322,445.40
  4. Step 4: Simplify right side
    575,165.40x = 278,314,522,975.26
  5. Step 5: Solve for x
    x = 278,314,522,975.26/575,165.40
  6. Step 6: Final answer
    x = 483,886.07

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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.