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Finding the Fourth Proportional to 374,681.20, 562,021.80 and 280,202.80

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Solution

The fourth proportional to 374,681.20, 562,021.80 and 280,202.80 is: 420,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,681.20 : 562,021.80 = 280,202.80 : x
  2. Step 2: Convert to fraction form
    374,681.20/562,021.80 = 280,202.80/x
  3. Step 3: Cross multiply
    374,681.20x = 562,021.80 × 280,202.80
  4. Step 4: Simplify right side
    374,681.20x = 157,480,082,021.04
  5. Step 5: Solve for x
    x = 157,480,082,021.04/374,681.20
  6. Step 6: Final answer
    x = 420,304.20

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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.