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Finding the Fourth Proportional to 200,629.85, 301,075.11 and 86,888.72

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Solution

The fourth proportional to 200,629.85, 301,075.11 and 86,888.72 is: 130,389.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,629.85 : 301,075.11 = 86,888.72 : x
  2. Step 2: Convert to fraction form
    200,629.85/301,075.11 = 86,888.72/x
  3. Step 3: Cross multiply
    200,629.85x = 301,075.11 × 86,888.72
  4. Step 4: Simplify right side
    200,629.85x = 26,160,031,684.45
  5. Step 5: Solve for x
    x = 26,160,031,684.45/200,629.85
  6. Step 6: Final answer
    x = 130,389.53

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1.5x scale

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.