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Finding the Fourth Proportional to 380,762.92, 525,455.94 and 210,999.88

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Solution

The fourth proportional to 380,762.92, 525,455.94 and 210,999.88 is: 291,181.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,762.92 : 525,455.94 = 210,999.88 : x
  2. Step 2: Convert to fraction form
    380,762.92/525,455.94 = 210,999.88/x
  3. Step 3: Cross multiply
    380,762.92x = 525,455.94 × 210,999.88
  4. Step 4: Simplify right side
    380,762.92x = 110,871,140,285.29
  5. Step 5: Solve for x
    x = 110,871,140,285.29/380,762.92
  6. Step 6: Final answer
    x = 291,181.56

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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.