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Finding the Fourth Proportional to 505,609.89, 758,121.40 and 239,368.15

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Solution

The fourth proportional to 505,609.89, 758,121.40 and 239,368.15 is: 358,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,609.89 : 758,121.40 = 239,368.15 : x
  2. Step 2: Convert to fraction form
    505,609.89/758,121.40 = 239,368.15/x
  3. Step 3: Cross multiply
    505,609.89x = 758,121.40 × 239,368.15
  4. Step 4: Simplify right side
    505,609.89x = 181,470,116,993.41
  5. Step 5: Solve for x
    x = 181,470,116,993.41/505,609.89
  6. Step 6: Final answer
    x = 358,913.31

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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.