Home / 308,823.08-426,140.04-172,864.64

Finding the Fourth Proportional to 308,823.08, 426,140.04 and 172,864.64

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Solution

The fourth proportional to 308,823.08, 426,140.04 and 172,864.64 is: 238,533.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,823.08 : 426,140.04 = 172,864.64 : x
  2. Step 2: Convert to fraction form
    308,823.08/426,140.04 = 172,864.64/x
  3. Step 3: Cross multiply
    308,823.08x = 426,140.04 × 172,864.64
  4. Step 4: Simplify right side
    308,823.08x = 73,664,544,604.19
  5. Step 5: Solve for x
    x = 73,664,544,604.19/308,823.08
  6. Step 6: Final answer
    x = 238,533.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.