Home / 308,979.20-463,468.80-121,966.40

Finding the Fourth Proportional to 308,979.20, 463,468.80 and 121,966.40

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Solution

The fourth proportional to 308,979.20, 463,468.80 and 121,966.40 is: 182,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,979.20 : 463,468.80 = 121,966.40 : x
  2. Step 2: Convert to fraction form
    308,979.20/463,468.80 = 121,966.40/x
  3. Step 3: Cross multiply
    308,979.20x = 463,468.80 × 121,966.40
  4. Step 4: Simplify right side
    308,979.20x = 56,527,621,048.32
  5. Step 5: Solve for x
    x = 56,527,621,048.32/308,979.20
  6. Step 6: Final answer
    x = 182,949.60

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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.