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Finding the Fourth Proportional to 313,480.59, 432,735.59 and 211,643.95

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Solution

The fourth proportional to 313,480.59, 432,735.59 and 211,643.95 is: 292,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,480.59 : 432,735.59 = 211,643.95 : x
  2. Step 2: Convert to fraction form
    313,480.59/432,735.59 = 211,643.95/x
  3. Step 3: Cross multiply
    313,480.59x = 432,735.59 × 211,643.95
  4. Step 4: Simplify right side
    313,480.59x = 91,585,869,020.45
  5. Step 5: Solve for x
    x = 91,585,869,020.45/313,480.59
  6. Step 6: Final answer
    x = 292,158.02

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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.