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Finding the Fourth Proportional to 399,345.73, 599,307.63 and 156,222.66

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Solution

The fourth proportional to 399,345.73, 599,307.63 and 156,222.66 is: 234,447.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,345.73 : 599,307.63 = 156,222.66 : x
  2. Step 2: Convert to fraction form
    399,345.73/599,307.63 = 156,222.66/x
  3. Step 3: Cross multiply
    399,345.73x = 599,307.63 × 156,222.66
  4. Step 4: Simplify right side
    399,345.73x = 93,625,430,407.36
  5. Step 5: Solve for x
    x = 93,625,430,407.36/399,345.73
  6. Step 6: Final answer
    x = 234,447.06

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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.