Home / 214,981.40-322,241.70-81,810.20

Finding the Fourth Proportional to 214,981.40, 322,241.70 and 81,810.20

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Solution

The fourth proportional to 214,981.40, 322,241.70 and 81,810.20 is: 122,627.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,981.40 : 322,241.70 = 81,810.20 : x
  2. Step 2: Convert to fraction form
    214,981.40/322,241.70 = 81,810.20/x
  3. Step 3: Cross multiply
    214,981.40x = 322,241.70 × 81,810.20
  4. Step 4: Simplify right side
    214,981.40x = 26,362,657,925.34
  5. Step 5: Solve for x
    x = 26,362,657,925.34/214,981.40
  6. Step 6: Final answer
    x = 122,627.62

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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.