Home / 286,739.32-427,960.64-282,009.36

Finding the Fourth Proportional to 286,739.32, 427,960.64 and 282,009.36

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Solution

The fourth proportional to 286,739.32, 427,960.64 and 282,009.36 is: 420,901.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,739.32 : 427,960.64 = 282,009.36 : x
  2. Step 2: Convert to fraction form
    286,739.32/427,960.64 = 282,009.36/x
  3. Step 3: Cross multiply
    286,739.32x = 427,960.64 × 282,009.36
  4. Step 4: Simplify right side
    286,739.32x = 120,688,906,191.59
  5. Step 5: Solve for x
    x = 120,688,906,191.59/286,739.32
  6. Step 6: Final answer
    x = 420,901.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.