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Finding the Fourth Proportional to 315,555.30, 472,982.36 and 240,427.76

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Solution

The fourth proportional to 315,555.30, 472,982.36 and 240,427.76 is: 360,374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,555.30 : 472,982.36 = 240,427.76 : x
  2. Step 2: Convert to fraction form
    315,555.30/472,982.36 = 240,427.76/x
  3. Step 3: Cross multiply
    315,555.30x = 472,982.36 × 240,427.76
  4. Step 4: Simplify right side
    315,555.30x = 113,718,089,334.31
  5. Step 5: Solve for x
    x = 113,718,089,334.31/315,555.30
  6. Step 6: Final answer
    x = 360,374.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.