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Finding the Fourth Proportional to 376,260.40, 563,515.80 and 257,287.60

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Solution

The fourth proportional to 376,260.40, 563,515.80 and 257,287.60 is: 385,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,260.40 : 563,515.80 = 257,287.60 : x
  2. Step 2: Convert to fraction form
    376,260.40/563,515.80 = 257,287.60/x
  3. Step 3: Cross multiply
    376,260.40x = 563,515.80 × 257,287.60
  4. Step 4: Simplify right side
    376,260.40x = 144,985,627,744.08
  5. Step 5: Solve for x
    x = 144,985,627,744.08/376,260.40
  6. Step 6: Final answer
    x = 385,333.21

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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.