Home / 223,945.09-309,084.47-128,483.35

Finding the Fourth Proportional to 223,945.09, 309,084.47 and 128,483.35

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Solution

The fourth proportional to 223,945.09, 309,084.47 and 128,483.35 is: 177,330.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,945.09 : 309,084.47 = 128,483.35 : x
  2. Step 2: Convert to fraction form
    223,945.09/309,084.47 = 128,483.35/x
  3. Step 3: Cross multiply
    223,945.09x = 309,084.47 × 128,483.35
  4. Step 4: Simplify right side
    223,945.09x = 39,712,207,496.16
  5. Step 5: Solve for x
    x = 39,712,207,496.16/223,945.09
  6. Step 6: Final answer
    x = 177,330.11

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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.