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Finding the Fourth Proportional to 256,907.90, 360,261.55 and 256,907.90

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Solution

The fourth proportional to 256,907.90, 360,261.55 and 256,907.90 is: 360,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,907.90 : 360,261.55 = 256,907.90 : x
  2. Step 2: Convert to fraction form
    256,907.90/360,261.55 = 256,907.90/x
  3. Step 3: Cross multiply
    256,907.90x = 360,261.55 × 256,907.90
  4. Step 4: Simplify right side
    256,907.90x = 92,554,038,261.25
  5. Step 5: Solve for x
    x = 92,554,038,261.25/256,907.90
  6. Step 6: Final answer
    x = 360,261.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.