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Finding the Fourth Proportional to 574,271.20, 861,406.80 and 147,806.20

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Solution

The fourth proportional to 574,271.20, 861,406.80 and 147,806.20 is: 221,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,271.20 : 861,406.80 = 147,806.20 : x
  2. Step 2: Convert to fraction form
    574,271.20/861,406.80 = 147,806.20/x
  3. Step 3: Cross multiply
    574,271.20x = 861,406.80 × 147,806.20
  4. Step 4: Simplify right side
    574,271.20x = 127,321,265,762.16
  5. Step 5: Solve for x
    x = 127,321,265,762.16/574,271.20
  6. Step 6: Final answer
    x = 221,709.30

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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.