Home / 385,030.47-531,128.73-223,867.70

Finding the Fourth Proportional to 385,030.47, 531,128.73 and 223,867.70

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Solution

The fourth proportional to 385,030.47, 531,128.73 and 223,867.70 is: 308,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,030.47 : 531,128.73 = 223,867.70 : x
  2. Step 2: Convert to fraction form
    385,030.47/531,128.73 = 223,867.70/x
  3. Step 3: Cross multiply
    385,030.47x = 531,128.73 × 223,867.70
  4. Step 4: Simplify right side
    385,030.47x = 118,902,568,516.84
  5. Step 5: Solve for x
    x = 118,902,568,516.84/385,030.47
  6. Step 6: Final answer
    x = 308,813.40

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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.