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Finding the Fourth Proportional to 380,521.62, 525,118.68 and 210,755.70

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Solution

The fourth proportional to 380,521.62, 525,118.68 and 210,755.70 is: 290,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,521.62 : 525,118.68 = 210,755.70 : x
  2. Step 2: Convert to fraction form
    380,521.62/525,118.68 = 210,755.70/x
  3. Step 3: Cross multiply
    380,521.62x = 525,118.68 × 210,755.70
  4. Step 4: Simplify right side
    380,521.62x = 110,671,754,986.48
  5. Step 5: Solve for x
    x = 110,671,754,986.48/380,521.62
  6. Step 6: Final answer
    x = 290,842.23

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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.