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Finding the Fourth Proportional to 260,303.63, 390,457.46 and 170,421.98

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Solution

The fourth proportional to 260,303.63, 390,457.46 and 170,421.98 is: 255,634.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,303.63 : 390,457.46 = 170,421.98 : x
  2. Step 2: Convert to fraction form
    260,303.63/390,457.46 = 170,421.98/x
  3. Step 3: Cross multiply
    260,303.63x = 390,457.46 × 170,421.98
  4. Step 4: Simplify right side
    260,303.63x = 66,542,531,912.74
  5. Step 5: Solve for x
    x = 66,542,531,912.74/260,303.63
  6. Step 6: Final answer
    x = 255,634.29

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1.5x scale

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.