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Finding the Fourth Proportional to 380,602.91, 525,287.97 and 219,426.48

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Solution

The fourth proportional to 380,602.91, 525,287.97 and 219,426.48 is: 302,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,602.91 : 525,287.97 = 219,426.48 : x
  2. Step 2: Convert to fraction form
    380,602.91/525,287.97 = 219,426.48/x
  3. Step 3: Cross multiply
    380,602.91x = 525,287.97 × 219,426.48
  4. Step 4: Simplify right side
    380,602.91x = 115,262,090,243.45
  5. Step 5: Solve for x
    x = 115,262,090,243.45/380,602.91
  6. Step 6: Final answer
    x = 302,840.80

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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.