Home / 316,007.09-436,089.70-172,767.10

Finding the Fourth Proportional to 316,007.09, 436,089.70 and 172,767.10

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Solution

The fourth proportional to 316,007.09, 436,089.70 and 172,767.10 is: 238,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,007.09 : 436,089.70 = 172,767.10 : x
  2. Step 2: Convert to fraction form
    316,007.09/436,089.70 = 172,767.10/x
  3. Step 3: Cross multiply
    316,007.09x = 436,089.70 × 172,767.10
  4. Step 4: Simplify right side
    316,007.09x = 75,341,952,808.87
  5. Step 5: Solve for x
    x = 75,341,952,808.87/316,007.09
  6. Step 6: Final answer
    x = 238,418.55

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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.