Home / 209,689.05-314,271.27-165,139.86

Finding the Fourth Proportional to 209,689.05, 314,271.27 and 165,139.86

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Solution

The fourth proportional to 209,689.05, 314,271.27 and 165,139.86 is: 247,503.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,689.05 : 314,271.27 = 165,139.86 : x
  2. Step 2: Convert to fraction form
    209,689.05/314,271.27 = 165,139.86/x
  3. Step 3: Cross multiply
    209,689.05x = 314,271.27 × 165,139.86
  4. Step 4: Simplify right side
    209,689.05x = 51,898,713,529.82
  5. Step 5: Solve for x
    x = 51,898,713,529.82/209,689.05
  6. Step 6: Final answer
    x = 247,503.21

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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.