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Finding the Fourth Proportional to 386,241.90, 579,363.93 and 120,041.34

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Solution

The fourth proportional to 386,241.90, 579,363.93 and 120,041.34 is: 180,062.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,241.90 : 579,363.93 = 120,041.34 : x
  2. Step 2: Convert to fraction form
    386,241.90/579,363.93 = 120,041.34/x
  3. Step 3: Cross multiply
    386,241.90x = 579,363.93 × 120,041.34
  4. Step 4: Simplify right side
    386,241.90x = 69,547,622,504.87
  5. Step 5: Solve for x
    x = 69,547,622,504.87/386,241.90
  6. Step 6: Final answer
    x = 180,062.35

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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.