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Finding the Fourth Proportional to 255,570.08, 383,355.12 and 161,879

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Solution

The fourth proportional to 255,570.08, 383,355.12 and 161,879 is: 242,818.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,570.08 : 383,355.12 = 161,879 : x
  2. Step 2: Convert to fraction form
    255,570.08/383,355.12 = 161,879/x
  3. Step 3: Cross multiply
    255,570.08x = 383,355.12 × 161,879
  4. Step 4: Simplify right side
    255,570.08x = 62,057,143,470.48
  5. Step 5: Solve for x
    x = 62,057,143,470.48/255,570.08
  6. Step 6: Final answer
    x = 242,818.50

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1.5x scale

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.