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Finding the Fourth Proportional to 402,008.04, 603,099.54 and 121,518

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Solution

The fourth proportional to 402,008.04, 603,099.54 and 121,518 is: 182,303.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,008.04 : 603,099.54 = 121,518 : x
  2. Step 2: Convert to fraction form
    402,008.04/603,099.54 = 121,518/x
  3. Step 3: Cross multiply
    402,008.04x = 603,099.54 × 121,518
  4. Step 4: Simplify right side
    402,008.04x = 73,287,449,901.72
  5. Step 5: Solve for x
    x = 73,287,449,901.72/402,008.04
  6. Step 6: Final answer
    x = 182,303.44

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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.