Home / 398,631.50-597,949.41-103,143.50

Finding the Fourth Proportional to 398,631.50, 597,949.41 and 103,143.50

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Solution

The fourth proportional to 398,631.50, 597,949.41 and 103,143.50 is: 154,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,631.50 : 597,949.41 = 103,143.50 : x
  2. Step 2: Convert to fraction form
    398,631.50/597,949.41 = 103,143.50/x
  3. Step 3: Cross multiply
    398,631.50x = 597,949.41 × 103,143.50
  4. Step 4: Simplify right side
    398,631.50x = 61,674,594,970.34
  5. Step 5: Solve for x
    x = 61,674,594,970.34/398,631.50
  6. Step 6: Final answer
    x = 154,715.81

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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.