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Finding the Fourth Proportional to 380,706.12, 525,374.45 and 210,940.25

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Solution

The fourth proportional to 380,706.12, 525,374.45 and 210,940.25 is: 291,097.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,706.12 : 525,374.45 = 210,940.25 : x
  2. Step 2: Convert to fraction form
    380,706.12/525,374.45 = 210,940.25/x
  3. Step 3: Cross multiply
    380,706.12x = 525,374.45 × 210,940.25
  4. Step 4: Simplify right side
    380,706.12x = 110,822,614,145.04
  5. Step 5: Solve for x
    x = 110,822,614,145.04/380,706.12
  6. Step 6: Final answer
    x = 291,097.54

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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.