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Finding the Fourth Proportional to 255,215.79, 382,879.04 and 77,718.15

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Solution

The fourth proportional to 255,215.79, 382,879.04 and 77,718.15 is: 116,594.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,215.79 : 382,879.04 = 77,718.15 : x
  2. Step 2: Convert to fraction form
    255,215.79/382,879.04 = 77,718.15/x
  3. Step 3: Cross multiply
    255,215.79x = 382,879.04 × 77,718.15
  4. Step 4: Simplify right side
    255,215.79x = 29,756,650,273.99
  5. Step 5: Solve for x
    x = 29,756,650,273.99/255,215.79
  6. Step 6: Final answer
    x = 116,594.08

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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.