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Finding the Fourth Proportional to 335,999.60, 503,999.40 and 290,380.40

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Solution

The fourth proportional to 335,999.60, 503,999.40 and 290,380.40 is: 435,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,999.60 : 503,999.40 = 290,380.40 : x
  2. Step 2: Convert to fraction form
    335,999.60/503,999.40 = 290,380.40/x
  3. Step 3: Cross multiply
    335,999.60x = 503,999.40 × 290,380.40
  4. Step 4: Simplify right side
    335,999.60x = 146,351,547,371.76
  5. Step 5: Solve for x
    x = 146,351,547,371.76/335,999.60
  6. Step 6: Final answer
    x = 435,570.60

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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.