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Finding the Fourth Proportional to 403,445.60, 605,168.40 and 254,146.40

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Solution

The fourth proportional to 403,445.60, 605,168.40 and 254,146.40 is: 381,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,445.60 : 605,168.40 = 254,146.40 : x
  2. Step 2: Convert to fraction form
    403,445.60/605,168.40 = 254,146.40/x
  3. Step 3: Cross multiply
    403,445.60x = 605,168.40 × 254,146.40
  4. Step 4: Simplify right side
    403,445.60x = 153,801,370,253.76
  5. Step 5: Solve for x
    x = 153,801,370,253.76/403,445.60
  6. Step 6: Final answer
    x = 381,219.60

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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.