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Finding the Fourth Proportional to 483,436.80, 724,809.60 and 216,979.20

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Solution

The fourth proportional to 483,436.80, 724,809.60 and 216,979.20 is: 325,313.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,436.80 : 724,809.60 = 216,979.20 : x
  2. Step 2: Convert to fraction form
    483,436.80/724,809.60 = 216,979.20/x
  3. Step 3: Cross multiply
    483,436.80x = 724,809.60 × 216,979.20
  4. Step 4: Simplify right side
    483,436.80x = 157,268,607,160.32
  5. Step 5: Solve for x
    x = 157,268,607,160.32/483,436.80
  6. Step 6: Final answer
    x = 325,313.69

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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.