Home / 208,433.40-287,638.35-112,940.08

Finding the Fourth Proportional to 208,433.40, 287,638.35 and 112,940.08

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Solution

The fourth proportional to 208,433.40, 287,638.35 and 112,940.08 is: 155,857.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,433.40 : 287,638.35 = 112,940.08 : x
  2. Step 2: Convert to fraction form
    208,433.40/287,638.35 = 112,940.08/x
  3. Step 3: Cross multiply
    208,433.40x = 287,638.35 × 112,940.08
  4. Step 4: Simplify right side
    208,433.40x = 32,485,898,260.07
  5. Step 5: Solve for x
    x = 32,485,898,260.07/208,433.40
  6. Step 6: Final answer
    x = 155,857.45

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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.