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Finding the Fourth Proportional to 620,898.40, 931,347.60 and 200,216.80

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Solution

The fourth proportional to 620,898.40, 931,347.60 and 200,216.80 is: 300,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,898.40 : 931,347.60 = 200,216.80 : x
  2. Step 2: Convert to fraction form
    620,898.40/931,347.60 = 200,216.80/x
  3. Step 3: Cross multiply
    620,898.40x = 931,347.60 × 200,216.80
  4. Step 4: Simplify right side
    620,898.40x = 186,471,436,159.68
  5. Step 5: Solve for x
    x = 186,471,436,159.68/620,898.40
  6. Step 6: Final answer
    x = 300,325.20

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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.