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Finding the Fourth Proportional to 397,287.70, 595,931.55 and 255,570.10

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Solution

The fourth proportional to 397,287.70, 595,931.55 and 255,570.10 is: 383,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,287.70 : 595,931.55 = 255,570.10 : x
  2. Step 2: Convert to fraction form
    397,287.70/595,931.55 = 255,570.10/x
  3. Step 3: Cross multiply
    397,287.70x = 595,931.55 × 255,570.10
  4. Step 4: Simplify right side
    397,287.70x = 152,302,285,826.66
  5. Step 5: Solve for x
    x = 152,302,285,826.66/397,287.70
  6. Step 6: Final answer
    x = 383,355.15

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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.