Home / 208,380.16-287,563.36-112,888.64

Finding the Fourth Proportional to 208,380.16, 287,563.36 and 112,888.64

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Solution

The fourth proportional to 208,380.16, 287,563.36 and 112,888.64 is: 155,785.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,380.16 : 287,563.36 = 112,888.64 : x
  2. Step 2: Convert to fraction form
    208,380.16/287,563.36 = 112,888.64/x
  3. Step 3: Cross multiply
    208,380.16x = 287,563.36 × 112,888.64
  4. Step 4: Simplify right side
    208,380.16x = 32,462,636,624.23
  5. Step 5: Solve for x
    x = 32,462,636,624.23/208,380.16
  6. Step 6: Final answer
    x = 155,785.64

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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.