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Finding the Fourth Proportional to 471,155.76, 650,136.12 and 318,526.08

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Solution

The fourth proportional to 471,155.76, 650,136.12 and 318,526.08 is: 439,526.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,155.76 : 650,136.12 = 318,526.08 : x
  2. Step 2: Convert to fraction form
    471,155.76/650,136.12 = 318,526.08/x
  3. Step 3: Cross multiply
    471,155.76x = 650,136.12 × 318,526.08
  4. Step 4: Simplify right side
    471,155.76x = 207,085,309,770.01
  5. Step 5: Solve for x
    x = 207,085,309,770.01/471,155.76
  6. Step 6: Final answer
    x = 439,526.22

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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.