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Finding the Fourth Proportional to 200,678.90, 301,017.75 and 50,918.90

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Solution

The fourth proportional to 200,678.90, 301,017.75 and 50,918.90 is: 76,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,678.90 : 301,017.75 = 50,918.90 : x
  2. Step 2: Convert to fraction form
    200,678.90/301,017.75 = 50,918.90/x
  3. Step 3: Cross multiply
    200,678.90x = 301,017.75 × 50,918.90
  4. Step 4: Simplify right side
    200,678.90x = 15,327,492,710.48
  5. Step 5: Solve for x
    x = 15,327,492,710.48/200,678.90
  6. Step 6: Final answer
    x = 76,378.20

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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.