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Finding the Fourth Proportional to 620,732.70, 931,012.65 and 200,051.10

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Solution

The fourth proportional to 620,732.70, 931,012.65 and 200,051.10 is: 300,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,732.70 : 931,012.65 = 200,051.10 : x
  2. Step 2: Convert to fraction form
    620,732.70/931,012.65 = 200,051.10/x
  3. Step 3: Cross multiply
    620,732.70x = 931,012.65 × 200,051.10
  4. Step 4: Simplify right side
    620,732.70x = 186,250,104,746.42
  5. Step 5: Solve for x
    x = 186,250,104,746.42/620,732.70
  6. Step 6: Final answer
    x = 300,048.80

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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.