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Finding the Fourth Proportional to 539,138.56, 808,569.32 and 159,969.60

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Solution

The fourth proportional to 539,138.56, 808,569.32 and 159,969.60 is: 239,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,138.56 : 808,569.32 = 159,969.60 : x
  2. Step 2: Convert to fraction form
    539,138.56/808,569.32 = 159,969.60/x
  3. Step 3: Cross multiply
    539,138.56x = 808,569.32 × 159,969.60
  4. Step 4: Simplify right side
    539,138.56x = 129,346,508,056.36
  5. Step 5: Solve for x
    x = 129,346,508,056.36/539,138.56
  6. Step 6: Final answer
    x = 239,913.30

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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.