Home / 289,985.05-435,088.44-163,767.81

Finding the Fourth Proportional to 289,985.05, 435,088.44 and 163,767.81

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Solution

The fourth proportional to 289,985.05, 435,088.44 and 163,767.81 is: 245,714.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,985.05 : 435,088.44 = 163,767.81 : x
  2. Step 2: Convert to fraction form
    289,985.05/435,088.44 = 163,767.81/x
  3. Step 3: Cross multiply
    289,985.05x = 435,088.44 × 163,767.81
  4. Step 4: Simplify right side
    289,985.05x = 71,253,480,975.12
  5. Step 5: Solve for x
    x = 71,253,480,975.12/289,985.05
  6. Step 6: Final answer
    x = 245,714.33

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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.