Home / 380,490.75-525,056.18-210,711.51

Finding the Fourth Proportional to 380,490.75, 525,056.18 and 210,711.51

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Solution

The fourth proportional to 380,490.75, 525,056.18 and 210,711.51 is: 290,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,490.75 : 525,056.18 = 210,711.51 : x
  2. Step 2: Convert to fraction form
    380,490.75/525,056.18 = 210,711.51/x
  3. Step 3: Cross multiply
    380,490.75x = 525,056.18 × 210,711.51
  4. Step 4: Simplify right side
    380,490.75x = 110,635,379,469.07
  5. Step 5: Solve for x
    x = 110,635,379,469.07/380,490.75
  6. Step 6: Final answer
    x = 290,770.22

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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.