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Finding the Fourth Proportional to 353,080.40, 529,620.60 and 318,088.40

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Solution

The fourth proportional to 353,080.40, 529,620.60 and 318,088.40 is: 477,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,080.40 : 529,620.60 = 318,088.40 : x
  2. Step 2: Convert to fraction form
    353,080.40/529,620.60 = 318,088.40/x
  3. Step 3: Cross multiply
    353,080.40x = 529,620.60 × 318,088.40
  4. Step 4: Simplify right side
    353,080.40x = 168,466,169,261.04
  5. Step 5: Solve for x
    x = 168,466,169,261.04/353,080.40
  6. Step 6: Final answer
    x = 477,132.60

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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.