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Finding the Fourth Proportional to 439,820.96, 659,774.72 and 124,280.32

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Solution

The fourth proportional to 439,820.96, 659,774.72 and 124,280.32 is: 186,432.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,820.96 : 659,774.72 = 124,280.32 : x
  2. Step 2: Convert to fraction form
    439,820.96/659,774.72 = 124,280.32/x
  3. Step 3: Cross multiply
    439,820.96x = 659,774.72 × 124,280.32
  4. Step 4: Simplify right side
    439,820.96x = 81,997,013,329.51
  5. Step 5: Solve for x
    x = 81,997,013,329.51/439,820.96
  6. Step 6: Final answer
    x = 186,432.71

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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.