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Finding the Fourth Proportional to 325,921.20, 488,881.80 and 286,522.80

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Solution

The fourth proportional to 325,921.20, 488,881.80 and 286,522.80 is: 429,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,921.20 : 488,881.80 = 286,522.80 : x
  2. Step 2: Convert to fraction form
    325,921.20/488,881.80 = 286,522.80/x
  3. Step 3: Cross multiply
    325,921.20x = 488,881.80 × 286,522.80
  4. Step 4: Simplify right side
    325,921.20x = 140,075,782,205.04
  5. Step 5: Solve for x
    x = 140,075,782,205.04/325,921.20
  6. Step 6: Final answer
    x = 429,784.20

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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.