Home / 308,777.23-426,131.36-172,808.40

Finding the Fourth Proportional to 308,777.23, 426,131.36 and 172,808.40

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Solution

The fourth proportional to 308,777.23, 426,131.36 and 172,808.40 is: 238,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,777.23 : 426,131.36 = 172,808.40 : x
  2. Step 2: Convert to fraction form
    308,777.23/426,131.36 = 172,808.40/x
  3. Step 3: Cross multiply
    308,777.23x = 426,131.36 × 172,808.40
  4. Step 4: Simplify right side
    308,777.23x = 73,639,078,511.42
  5. Step 5: Solve for x
    x = 73,639,078,511.42/308,777.23
  6. Step 6: Final answer
    x = 238,486.10

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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.