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Finding the Fourth Proportional to 549,986.40, 825,635.70 and 310,291.20

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Solution

The fourth proportional to 549,986.40, 825,635.70 and 310,291.20 is: 465,806.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,986.40 : 825,635.70 = 310,291.20 : x
  2. Step 2: Convert to fraction form
    549,986.40/825,635.70 = 310,291.20/x
  3. Step 3: Cross multiply
    549,986.40x = 825,635.70 × 310,291.20
  4. Step 4: Simplify right side
    549,986.40x = 256,187,492,115.84
  5. Step 5: Solve for x
    x = 256,187,492,115.84/549,986.40
  6. Step 6: Final answer
    x = 465,806.96

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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.