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Finding the Fourth Proportional to 380,412.99, 524,963.49 and 210,643.47

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Solution

The fourth proportional to 380,412.99, 524,963.49 and 210,643.47 is: 290,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,412.99 : 524,963.49 = 210,643.47 : x
  2. Step 2: Convert to fraction form
    380,412.99/524,963.49 = 210,643.47/x
  3. Step 3: Cross multiply
    380,412.99x = 524,963.49 × 210,643.47
  4. Step 4: Simplify right side
    380,412.99x = 110,580,131,156.91
  5. Step 5: Solve for x
    x = 110,580,131,156.91/380,412.99
  6. Step 6: Final answer
    x = 290,684.42

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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.