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Finding the Fourth Proportional to 312,381.35, 430,927.45 and 183,235.35

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Solution

The fourth proportional to 312,381.35, 430,927.45 and 183,235.35 is: 252,771.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,381.35 : 430,927.45 = 183,235.35 : x
  2. Step 2: Convert to fraction form
    312,381.35/430,927.45 = 183,235.35/x
  3. Step 3: Cross multiply
    312,381.35x = 430,927.45 × 183,235.35
  4. Step 4: Simplify right side
    312,381.35x = 78,961,142,125.36
  5. Step 5: Solve for x
    x = 78,961,142,125.36/312,381.35
  6. Step 6: Final answer
    x = 252,771.63

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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.