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Finding the Fourth Proportional to 286,087.95, 394,802.91 and 158,763.65

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Solution

The fourth proportional to 286,087.95, 394,802.91 and 158,763.65 is: 219,094.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,087.95 : 394,802.91 = 158,763.65 : x
  2. Step 2: Convert to fraction form
    286,087.95/394,802.91 = 158,763.65/x
  3. Step 3: Cross multiply
    286,087.95x = 394,802.91 × 158,763.65
  4. Step 4: Simplify right side
    286,087.95x = 62,680,349,048.21
  5. Step 5: Solve for x
    x = 62,680,349,048.21/286,087.95
  6. Step 6: Final answer
    x = 219,094.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.