Home / 315,986.12-436,060.80-172,746.12

Finding the Fourth Proportional to 315,986.12, 436,060.80 and 172,746.12

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Solution

The fourth proportional to 315,986.12, 436,060.80 and 172,746.12 is: 238,389.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,986.12 : 436,060.80 = 172,746.12 : x
  2. Step 2: Convert to fraction form
    315,986.12/436,060.80 = 172,746.12/x
  3. Step 3: Cross multiply
    315,986.12x = 436,060.80 × 172,746.12
  4. Step 4: Simplify right side
    315,986.12x = 75,327,811,284.10
  5. Step 5: Solve for x
    x = 75,327,811,284.10/315,986.12
  6. Step 6: Final answer
    x = 238,389.62

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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.