Home / 208,417.08-312,561.78-75,280.92

Finding the Fourth Proportional to 208,417.08, 312,561.78 and 75,280.92

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Solution

The fourth proportional to 208,417.08, 312,561.78 and 75,280.92 is: 112,898.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,417.08 : 312,561.78 = 75,280.92 : x
  2. Step 2: Convert to fraction form
    208,417.08/312,561.78 = 75,280.92/x
  3. Step 3: Cross multiply
    208,417.08x = 312,561.78 × 75,280.92
  4. Step 4: Simplify right side
    208,417.08x = 23,529,938,355.24
  5. Step 5: Solve for x
    x = 23,529,938,355.24/208,417.08
  6. Step 6: Final answer
    x = 112,898.32

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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.