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Finding the Fourth Proportional to 380,553, 525,163.14 and 210,798.12

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Solution

The fourth proportional to 380,553, 525,163.14 and 210,798.12 is: 290,901.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,553 : 525,163.14 = 210,798.12 : x
  2. Step 2: Convert to fraction form
    380,553/525,163.14 = 210,798.12/x
  3. Step 3: Cross multiply
    380,553x = 525,163.14 × 210,798.12
  4. Step 4: Simplify right side
    380,553x = 110,703,402,605.30
  5. Step 5: Solve for x
    x = 110,703,402,605.30/380,553
  6. Step 6: Final answer
    x = 290,901.41

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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.