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Finding the Fourth Proportional to 380,635.52, 525,238.80 and 210,837.92

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Solution

The fourth proportional to 380,635.52, 525,238.80 and 210,837.92 is: 290,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,635.52 : 525,238.80 = 210,837.92 : x
  2. Step 2: Convert to fraction form
    380,635.52/525,238.80 = 210,837.92/x
  3. Step 3: Cross multiply
    380,635.52x = 525,238.80 × 210,837.92
  4. Step 4: Simplify right side
    380,635.52x = 110,740,256,095.30
  5. Step 5: Solve for x
    x = 110,740,256,095.30/380,635.52
  6. Step 6: Final answer
    x = 290,935.16

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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.