Home / 208,320.66-312,495.57-103,111.38

Finding the Fourth Proportional to 208,320.66, 312,495.57 and 103,111.38

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Solution

The fourth proportional to 208,320.66, 312,495.57 and 103,111.38 is: 154,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,320.66 : 312,495.57 = 103,111.38 : x
  2. Step 2: Convert to fraction form
    208,320.66/312,495.57 = 103,111.38/x
  3. Step 3: Cross multiply
    208,320.66x = 312,495.57 × 103,111.38
  4. Step 4: Simplify right side
    208,320.66x = 32,221,849,466.59
  5. Step 5: Solve for x
    x = 32,221,849,466.59/208,320.66
  6. Step 6: Final answer
    x = 154,674.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.