Home / 256,541.40-384,374.70-211,926.60

Finding the Fourth Proportional to 256,541.40, 384,374.70 and 211,926.60

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Solution

The fourth proportional to 256,541.40, 384,374.70 and 211,926.60 is: 317,528.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,541.40 : 384,374.70 = 211,926.60 : x
  2. Step 2: Convert to fraction form
    256,541.40/384,374.70 = 211,926.60/x
  3. Step 3: Cross multiply
    256,541.40x = 384,374.70 × 211,926.60
  4. Step 4: Simplify right side
    256,541.40x = 81,459,223,297.02
  5. Step 5: Solve for x
    x = 81,459,223,297.02/256,541.40
  6. Step 6: Final answer
    x = 317,528.57

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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.