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Finding the Fourth Proportional to 587,209.60, 810,353.32 and 318,937.60

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Solution

The fourth proportional to 587,209.60, 810,353.32 and 318,937.60 is: 440,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,209.60 : 810,353.32 = 318,937.60 : x
  2. Step 2: Convert to fraction form
    587,209.60/810,353.32 = 318,937.60/x
  3. Step 3: Cross multiply
    587,209.60x = 810,353.32 × 318,937.60
  4. Step 4: Simplify right side
    587,209.60x = 258,452,143,032.83
  5. Step 5: Solve for x
    x = 258,452,143,032.83/587,209.60
  6. Step 6: Final answer
    x = 440,136.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.