Home / 354,865.35-488,471.19-309,463.23

Finding the Fourth Proportional to 354,865.35, 488,471.19 and 309,463.23

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Solution

The fourth proportional to 354,865.35, 488,471.19 and 309,463.23 is: 425,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,865.35 : 488,471.19 = 309,463.23 : x
  2. Step 2: Convert to fraction form
    354,865.35/488,471.19 = 309,463.23/x
  3. Step 3: Cross multiply
    354,865.35x = 488,471.19 × 309,463.23
  4. Step 4: Simplify right side
    354,865.35x = 151,163,872,219.34
  5. Step 5: Solve for x
    x = 151,163,872,219.34/354,865.35
  6. Step 6: Final answer
    x = 425,975.30

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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.