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Finding the Fourth Proportional to 315,988.13, 436,007.55 and 186,932.04

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Solution

The fourth proportional to 315,988.13, 436,007.55 and 186,932.04 is: 257,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,988.13 : 436,007.55 = 186,932.04 : x
  2. Step 2: Convert to fraction form
    315,988.13/436,007.55 = 186,932.04/x
  3. Step 3: Cross multiply
    315,988.13x = 436,007.55 × 186,932.04
  4. Step 4: Simplify right side
    315,988.13x = 81,503,780,776.90
  5. Step 5: Solve for x
    x = 81,503,780,776.90/315,988.13
  6. Step 6: Final answer
    x = 257,933.05

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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.