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Finding the Fourth Proportional to 499,070.28, 748,383.03 and 143,999.94

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Solution

The fourth proportional to 499,070.28, 748,383.03 and 143,999.94 is: 215,935.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,070.28 : 748,383.03 = 143,999.94 : x
  2. Step 2: Convert to fraction form
    499,070.28/748,383.03 = 143,999.94/x
  3. Step 3: Cross multiply
    499,070.28x = 748,383.03 × 143,999.94
  4. Step 4: Simplify right side
    499,070.28x = 107,767,111,417.02
  5. Step 5: Solve for x
    x = 107,767,111,417.02/499,070.28
  6. Step 6: Final answer
    x = 215,935.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.