Home / 210,318.30-314,959.05-139,815.90

Finding the Fourth Proportional to 210,318.30, 314,959.05 and 139,815.90

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Solution

The fourth proportional to 210,318.30, 314,959.05 and 139,815.90 is: 209,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,318.30 : 314,959.05 = 139,815.90 : x
  2. Step 2: Convert to fraction form
    210,318.30/314,959.05 = 139,815.90/x
  3. Step 3: Cross multiply
    210,318.30x = 314,959.05 × 139,815.90
  4. Step 4: Simplify right side
    210,318.30x = 44,036,283,038.90
  5. Step 5: Solve for x
    x = 44,036,283,038.90/210,318.30
  6. Step 6: Final answer
    x = 209,379.23

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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.