Home / 407,869.16-611,865.96-208,080.56

Finding the Fourth Proportional to 407,869.16, 611,865.96 and 208,080.56

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Solution

The fourth proportional to 407,869.16, 611,865.96 and 208,080.56 is: 312,152.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,869.16 : 611,865.96 = 208,080.56 : x
  2. Step 2: Convert to fraction form
    407,869.16/611,865.96 = 208,080.56/x
  3. Step 3: Cross multiply
    407,869.16x = 611,865.96 × 208,080.56
  4. Step 4: Simplify right side
    407,869.16x = 127,317,411,601.74
  5. Step 5: Solve for x
    x = 127,317,411,601.74/407,869.16
  6. Step 6: Final answer
    x = 312,152.58

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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.