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Finding the Fourth Proportional to 370,968.80, 556,420.80 and 121,650.80

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Solution

The fourth proportional to 370,968.80, 556,420.80 and 121,650.80 is: 182,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,968.80 : 556,420.80 = 121,650.80 : x
  2. Step 2: Convert to fraction form
    370,968.80/556,420.80 = 121,650.80/x
  3. Step 3: Cross multiply
    370,968.80x = 556,420.80 × 121,650.80
  4. Step 4: Simplify right side
    370,968.80x = 67,689,035,456.64
  5. Step 5: Solve for x
    x = 67,689,035,456.64/370,968.80
  6. Step 6: Final answer
    x = 182,465.58

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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.