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Finding the Fourth Proportional to 260,208.78, 359,088.72 and 145,491.51

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Solution

The fourth proportional to 260,208.78, 359,088.72 and 145,491.51 is: 200,778.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,208.78 : 359,088.72 = 145,491.51 : x
  2. Step 2: Convert to fraction form
    260,208.78/359,088.72 = 145,491.51/x
  3. Step 3: Cross multiply
    260,208.78x = 359,088.72 × 145,491.51
  4. Step 4: Simplify right side
    260,208.78x = 52,244,360,096.77
  5. Step 5: Solve for x
    x = 52,244,360,096.77/260,208.78
  6. Step 6: Final answer
    x = 200,778.62

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1.5x scale

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.