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Finding the Fourth Proportional to 305,316.63, 421,365.29 and 176,259.33

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Solution

The fourth proportional to 305,316.63, 421,365.29 and 176,259.33 is: 243,254.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,316.63 : 421,365.29 = 176,259.33 : x
  2. Step 2: Convert to fraction form
    305,316.63/421,365.29 = 176,259.33/x
  3. Step 3: Cross multiply
    305,316.63x = 421,365.29 × 176,259.33
  4. Step 4: Simplify right side
    305,316.63x = 74,269,562,819.36
  5. Step 5: Solve for x
    x = 74,269,562,819.36/305,316.63
  6. Step 6: Final answer
    x = 243,254.23

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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.