Home / 306,861.10-423,438.06-170,907.74

Finding the Fourth Proportional to 306,861.10, 423,438.06 and 170,907.74

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Solution

The fourth proportional to 306,861.10, 423,438.06 and 170,907.74 is: 235,835.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,861.10 : 423,438.06 = 170,907.74 : x
  2. Step 2: Convert to fraction form
    306,861.10/423,438.06 = 170,907.74/x
  3. Step 3: Cross multiply
    306,861.10x = 423,438.06 × 170,907.74
  4. Step 4: Simplify right side
    306,861.10x = 72,368,841,864.58
  5. Step 5: Solve for x
    x = 72,368,841,864.58/306,861.10
  6. Step 6: Final answer
    x = 235,835.83

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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.