Home / 209,009.64-288,516.02-145,384.36

Finding the Fourth Proportional to 209,009.64, 288,516.02 and 145,384.36

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Solution

The fourth proportional to 209,009.64, 288,516.02 and 145,384.36 is: 200,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,009.64 : 288,516.02 = 145,384.36 : x
  2. Step 2: Convert to fraction form
    209,009.64/288,516.02 = 145,384.36/x
  3. Step 3: Cross multiply
    209,009.64x = 288,516.02 × 145,384.36
  4. Step 4: Simplify right side
    209,009.64x = 41,945,716,917.45
  5. Step 5: Solve for x
    x = 41,945,716,917.45/209,009.64
  6. Step 6: Final answer
    x = 200,687.95

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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.