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Finding the Fourth Proportional to 282,498.86, 389,851.26 and 153,439.86

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Solution

The fourth proportional to 282,498.86, 389,851.26 and 153,439.86 is: 211,748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,498.86 : 389,851.26 = 153,439.86 : x
  2. Step 2: Convert to fraction form
    282,498.86/389,851.26 = 153,439.86/x
  3. Step 3: Cross multiply
    282,498.86x = 389,851.26 × 153,439.86
  4. Step 4: Simplify right side
    282,498.86x = 59,818,723,016.99
  5. Step 5: Solve for x
    x = 59,818,723,016.99/282,498.86
  6. Step 6: Final answer
    x = 211,748.54

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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.