Home / 208,428.31-287,631.13-112,935.01

Finding the Fourth Proportional to 208,428.31, 287,631.13 and 112,935.01

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Solution

The fourth proportional to 208,428.31, 287,631.13 and 112,935.01 is: 155,850.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,428.31 : 287,631.13 = 112,935.01 : x
  2. Step 2: Convert to fraction form
    208,428.31/287,631.13 = 112,935.01/x
  3. Step 3: Cross multiply
    208,428.31x = 287,631.13 × 112,935.01
  4. Step 4: Simplify right side
    208,428.31x = 32,483,623,974.88
  5. Step 5: Solve for x
    x = 32,483,623,974.88/208,428.31
  6. Step 6: Final answer
    x = 155,850.34

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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.