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Finding the Fourth Proportional to 293,457.40, 439,019.70 and 254,447.80

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Solution

The fourth proportional to 293,457.40, 439,019.70 and 254,447.80 is: 380,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,457.40 : 439,019.70 = 254,447.80 : x
  2. Step 2: Convert to fraction form
    293,457.40/439,019.70 = 254,447.80/x
  3. Step 3: Cross multiply
    293,457.40x = 439,019.70 × 254,447.80
  4. Step 4: Simplify right side
    293,457.40x = 111,707,596,821.66
  5. Step 5: Solve for x
    x = 111,707,596,821.66/293,457.40
  6. Step 6: Final answer
    x = 380,660.35

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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.