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Finding the Fourth Proportional to 403,419.15, 604,987.53 and 119,034.20

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Solution

The fourth proportional to 403,419.15, 604,987.53 and 119,034.20 is: 178,509.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,419.15 : 604,987.53 = 119,034.20 : x
  2. Step 2: Convert to fraction form
    403,419.15/604,987.53 = 119,034.20/x
  3. Step 3: Cross multiply
    403,419.15x = 604,987.53 × 119,034.20
  4. Step 4: Simplify right side
    403,419.15x = 72,014,203,618.59
  5. Step 5: Solve for x
    x = 72,014,203,618.59/403,419.15
  6. Step 6: Final answer
    x = 178,509.63

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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.