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Finding the Fourth Proportional to 421,632.36, 632,007.90 and 184,775.40

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Solution

The fourth proportional to 421,632.36, 632,007.90 and 184,775.40 is: 276,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,632.36 : 632,007.90 = 184,775.40 : x
  2. Step 2: Convert to fraction form
    421,632.36/632,007.90 = 184,775.40/x
  3. Step 3: Cross multiply
    421,632.36x = 632,007.90 × 184,775.40
  4. Step 4: Simplify right side
    421,632.36x = 116,779,512,525.66
  5. Step 5: Solve for x
    x = 116,779,512,525.66/421,632.36
  6. Step 6: Final answer
    x = 276,969.99

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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.