Home / 426,769.04-640,555.20-216,557.84

Finding the Fourth Proportional to 426,769.04, 640,555.20 and 216,557.84

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Solution

The fourth proportional to 426,769.04, 640,555.20 and 216,557.84 is: 325,040.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,769.04 : 640,555.20 = 216,557.84 : x
  2. Step 2: Convert to fraction form
    426,769.04/640,555.20 = 216,557.84/x
  3. Step 3: Cross multiply
    426,769.04x = 640,555.20 × 216,557.84
  4. Step 4: Simplify right side
    426,769.04x = 138,717,250,512.77
  5. Step 5: Solve for x
    x = 138,717,250,512.77/426,769.04
  6. Step 6: Final answer
    x = 325,040.57

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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.