Home / 399,795.60-551,730.67-218,503.64

Finding the Fourth Proportional to 399,795.60, 551,730.67 and 218,503.64

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Solution

The fourth proportional to 399,795.60, 551,730.67 and 218,503.64 is: 301,541.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,795.60 : 551,730.67 = 218,503.64 : x
  2. Step 2: Convert to fraction form
    399,795.60/551,730.67 = 218,503.64/x
  3. Step 3: Cross multiply
    399,795.60x = 551,730.67 × 218,503.64
  4. Step 4: Simplify right side
    399,795.60x = 120,555,159,694.64
  5. Step 5: Solve for x
    x = 120,555,159,694.64/399,795.60
  6. Step 6: Final answer
    x = 301,541.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.