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Finding the Fourth Proportional to 310,027.80, 427,842.78 and 174,091.20

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Solution

The fourth proportional to 310,027.80, 427,842.78 and 174,091.20 is: 240,248.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,027.80 : 427,842.78 = 174,091.20 : x
  2. Step 2: Convert to fraction form
    310,027.80/427,842.78 = 174,091.20/x
  3. Step 3: Cross multiply
    310,027.80x = 427,842.78 × 174,091.20
  4. Step 4: Simplify right side
    310,027.80x = 74,483,662,981.54
  5. Step 5: Solve for x
    x = 74,483,662,981.54/310,027.80
  6. Step 6: Final answer
    x = 240,248.34

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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.