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Finding the Fourth Proportional to 260,978.84, 360,133.74 and 153,528.11

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Solution

The fourth proportional to 260,978.84, 360,133.74 and 153,528.11 is: 211,858.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,978.84 : 360,133.74 = 153,528.11 : x
  2. Step 2: Convert to fraction form
    260,978.84/360,133.74 = 153,528.11/x
  3. Step 3: Cross multiply
    260,978.84x = 360,133.74 × 153,528.11
  4. Step 4: Simplify right side
    260,978.84x = 55,290,650,648.76
  5. Step 5: Solve for x
    x = 55,290,650,648.76/260,978.84
  6. Step 6: Final answer
    x = 211,858.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.