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Finding the Fourth Proportional to 354,150.40, 529,689.60 and 316,979.20

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Solution

The fourth proportional to 354,150.40, 529,689.60 and 316,979.20 is: 474,094.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,150.40 : 529,689.60 = 316,979.20 : x
  2. Step 2: Convert to fraction form
    354,150.40/529,689.60 = 316,979.20/x
  3. Step 3: Cross multiply
    354,150.40x = 529,689.60 × 316,979.20
  4. Step 4: Simplify right side
    354,150.40x = 167,900,585,656.32
  5. Step 5: Solve for x
    x = 167,900,585,656.32/354,150.40
  6. Step 6: Final answer
    x = 474,094.02

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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.