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Finding the Fourth Proportional to 380,498.72, 525,092.64 and 210,735.68

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Solution

The fourth proportional to 380,498.72, 525,092.64 and 210,735.68 is: 290,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,498.72 : 525,092.64 = 210,735.68 : x
  2. Step 2: Convert to fraction form
    380,498.72/525,092.64 = 210,735.68/x
  3. Step 3: Cross multiply
    380,498.72x = 525,092.64 × 210,735.68
  4. Step 4: Simplify right side
    380,498.72x = 110,655,754,553.40
  5. Step 5: Solve for x
    x = 110,655,754,553.40/380,498.72
  6. Step 6: Final answer
    x = 290,817.68

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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.