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Finding the Fourth Proportional to 359,202.94, 495,665 and 221,360.44

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Solution

The fourth proportional to 359,202.94, 495,665 and 221,360.44 is: 305,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,202.94 : 495,665 = 221,360.44 : x
  2. Step 2: Convert to fraction form
    359,202.94/495,665 = 221,360.44/x
  3. Step 3: Cross multiply
    359,202.94x = 495,665 × 221,360.44
  4. Step 4: Simplify right side
    359,202.94x = 109,720,622,492.60
  5. Step 5: Solve for x
    x = 109,720,622,492.60/359,202.94
  6. Step 6: Final answer
    x = 305,455.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.