Home / 223,945.34-309,084.81-128,483.60

Finding the Fourth Proportional to 223,945.34, 309,084.81 and 128,483.60

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Solution

The fourth proportional to 223,945.34, 309,084.81 and 128,483.60 is: 177,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,945.34 : 309,084.81 = 128,483.60 : x
  2. Step 2: Convert to fraction form
    223,945.34/309,084.81 = 128,483.60/x
  3. Step 3: Cross multiply
    223,945.34x = 309,084.81 × 128,483.60
  4. Step 4: Simplify right side
    223,945.34x = 39,712,329,094.12
  5. Step 5: Solve for x
    x = 39,712,329,094.12/223,945.34
  6. Step 6: Final answer
    x = 177,330.46

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1.5x scale

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.