Home / 459,916.45-689,874.86-206,901.40

Finding the Fourth Proportional to 459,916.45, 689,874.86 and 206,901.40

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Solution

The fourth proportional to 459,916.45, 689,874.86 and 206,901.40 is: 310,352.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,916.45 : 689,874.86 = 206,901.40 : x
  2. Step 2: Convert to fraction form
    459,916.45/689,874.86 = 206,901.40/x
  3. Step 3: Cross multiply
    459,916.45x = 689,874.86 × 206,901.40
  4. Step 4: Simplify right side
    459,916.45x = 142,736,074,358.80
  5. Step 5: Solve for x
    x = 142,736,074,358.80/459,916.45
  6. Step 6: Final answer
    x = 310,352.18

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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.