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Finding the Fourth Proportional to 620,928.60, 931,554.90 and 200,214.60

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Solution

The fourth proportional to 620,928.60, 931,554.90 and 200,214.60 is: 300,374.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,928.60 : 931,554.90 = 200,214.60 : x
  2. Step 2: Convert to fraction form
    620,928.60/931,554.90 = 200,214.60/x
  3. Step 3: Cross multiply
    620,928.60x = 931,554.90 × 200,214.60
  4. Step 4: Simplify right side
    620,928.60x = 186,510,891,681.54
  5. Step 5: Solve for x
    x = 186,510,891,681.54/620,928.60
  6. Step 6: Final answer
    x = 300,374.14

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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.