Home / 257,071.20-385,376.40-229,077.60

Finding the Fourth Proportional to 257,071.20, 385,376.40 and 229,077.60

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Solution

The fourth proportional to 257,071.20, 385,376.40 and 229,077.60 is: 343,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,071.20 : 385,376.40 = 229,077.60 : x
  2. Step 2: Convert to fraction form
    257,071.20/385,376.40 = 229,077.60/x
  3. Step 3: Cross multiply
    257,071.20x = 385,376.40 × 229,077.60
  4. Step 4: Simplify right side
    257,071.20x = 88,281,100,808.64
  5. Step 5: Solve for x
    x = 88,281,100,808.64/257,071.20
  6. Step 6: Final answer
    x = 343,411.09

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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.