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Finding the Fourth Proportional to 357,640.40, 536,460.60 and 239,445.20

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Solution

The fourth proportional to 357,640.40, 536,460.60 and 239,445.20 is: 359,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,640.40 : 536,460.60 = 239,445.20 : x
  2. Step 2: Convert to fraction form
    357,640.40/536,460.60 = 239,445.20/x
  3. Step 3: Cross multiply
    357,640.40x = 536,460.60 × 239,445.20
  4. Step 4: Simplify right side
    357,640.40x = 128,452,915,659.12
  5. Step 5: Solve for x
    x = 128,452,915,659.12/357,640.40
  6. Step 6: Final answer
    x = 359,167.80

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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.