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Finding the Fourth Proportional to 459,147.60, 687,360.60 and 341,341.20

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Solution

The fourth proportional to 459,147.60, 687,360.60 and 341,341.20 is: 511,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,147.60 : 687,360.60 = 341,341.20 : x
  2. Step 2: Convert to fraction form
    459,147.60/687,360.60 = 341,341.20/x
  3. Step 3: Cross multiply
    459,147.60x = 687,360.60 × 341,341.20
  4. Step 4: Simplify right side
    459,147.60x = 234,624,492,036.72
  5. Step 5: Solve for x
    x = 234,624,492,036.72/459,147.60
  6. Step 6: Final answer
    x = 511,000.15

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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.