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Finding the Fourth Proportional to 379,991.32, 524,368.86 and 207,905.56

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Solution

The fourth proportional to 379,991.32, 524,368.86 and 207,905.56 is: 286,899.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,991.32 : 524,368.86 = 207,905.56 : x
  2. Step 2: Convert to fraction form
    379,991.32/524,368.86 = 207,905.56/x
  3. Step 3: Cross multiply
    379,991.32x = 524,368.86 × 207,905.56
  4. Step 4: Simplify right side
    379,991.32x = 109,019,201,484.86
  5. Step 5: Solve for x
    x = 109,019,201,484.86/379,991.32
  6. Step 6: Final answer
    x = 286,899.19

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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.