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Finding the Fourth Proportional to 556,556.80, 834,636.80 and 201,478.72

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Solution

The fourth proportional to 556,556.80, 834,636.80 and 201,478.72 is: 302,146.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,556.80 : 834,636.80 = 201,478.72 : x
  2. Step 2: Convert to fraction form
    556,556.80/834,636.80 = 201,478.72/x
  3. Step 3: Cross multiply
    556,556.80x = 834,636.80 × 201,478.72
  4. Step 4: Simplify right side
    556,556.80x = 168,161,554,128.90
  5. Step 5: Solve for x
    x = 168,161,554,128.90/556,556.80
  6. Step 6: Final answer
    x = 302,146.26

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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.