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Finding the Fourth Proportional to 335,812.80, 503,719.20 and 259,705.20

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Solution

The fourth proportional to 335,812.80, 503,719.20 and 259,705.20 is: 389,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,812.80 : 503,719.20 = 259,705.20 : x
  2. Step 2: Convert to fraction form
    335,812.80/503,719.20 = 259,705.20/x
  3. Step 3: Cross multiply
    335,812.80x = 503,719.20 × 259,705.20
  4. Step 4: Simplify right side
    335,812.80x = 130,818,495,579.84
  5. Step 5: Solve for x
    x = 130,818,495,579.84/335,812.80
  6. Step 6: Final answer
    x = 389,557.80

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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.