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Finding the Fourth Proportional to 427,333.08, 640,762.96 and 174,790.90

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Solution

The fourth proportional to 427,333.08, 640,762.96 and 174,790.90 is: 262,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,333.08 : 640,762.96 = 174,790.90 : x
  2. Step 2: Convert to fraction form
    427,333.08/640,762.96 = 174,790.90/x
  3. Step 3: Cross multiply
    427,333.08x = 640,762.96 × 174,790.90
  4. Step 4: Simplify right side
    427,333.08x = 111,999,534,465.06
  5. Step 5: Solve for x
    x = 111,999,534,465.06/427,333.08
  6. Step 6: Final answer
    x = 262,089.55

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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.