Home / 210,207.80-314,793.30-139,705.40

Finding the Fourth Proportional to 210,207.80, 314,793.30 and 139,705.40

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Solution

The fourth proportional to 210,207.80, 314,793.30 and 139,705.40 is: 209,213.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,207.80 : 314,793.30 = 139,705.40 : x
  2. Step 2: Convert to fraction form
    210,207.80/314,793.30 = 139,705.40/x
  3. Step 3: Cross multiply
    210,207.80x = 314,793.30 × 139,705.40
  4. Step 4: Simplify right side
    210,207.80x = 43,978,323,893.82
  5. Step 5: Solve for x
    x = 43,978,323,893.82/210,207.80
  6. Step 6: Final answer
    x = 209,213.57

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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.