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Finding the Fourth Proportional to 316,271.66, 436,720.84 and 225,904.82

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Solution

The fourth proportional to 316,271.66, 436,720.84 and 225,904.82 is: 311,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,271.66 : 436,720.84 = 225,904.82 : x
  2. Step 2: Convert to fraction form
    316,271.66/436,720.84 = 225,904.82/x
  3. Step 3: Cross multiply
    316,271.66x = 436,720.84 × 225,904.82
  4. Step 4: Simplify right side
    316,271.66x = 98,657,342,750.45
  5. Step 5: Solve for x
    x = 98,657,342,750.45/316,271.66
  6. Step 6: Final answer
    x = 311,938.61

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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.