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Finding the Fourth Proportional to 269,315.60, 403,973.40 and 257,068.40

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Solution

The fourth proportional to 269,315.60, 403,973.40 and 257,068.40 is: 385,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,315.60 : 403,973.40 = 257,068.40 : x
  2. Step 2: Convert to fraction form
    269,315.60/403,973.40 = 257,068.40/x
  3. Step 3: Cross multiply
    269,315.60x = 403,973.40 × 257,068.40
  4. Step 4: Simplify right side
    269,315.60x = 103,848,795,580.56
  5. Step 5: Solve for x
    x = 103,848,795,580.56/269,315.60
  6. Step 6: Final answer
    x = 385,602.60

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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.