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Finding the Fourth Proportional to 511,655.54, 767,485.13 and 156,668.07

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Solution

The fourth proportional to 511,655.54, 767,485.13 and 156,668.07 is: 235,002.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,655.54 : 767,485.13 = 156,668.07 : x
  2. Step 2: Convert to fraction form
    511,655.54/767,485.13 = 156,668.07/x
  3. Step 3: Cross multiply
    511,655.54x = 767,485.13 × 156,668.07
  4. Step 4: Simplify right side
    511,655.54x = 120,240,416,165.53
  5. Step 5: Solve for x
    x = 120,240,416,165.53/511,655.54
  6. Step 6: Final answer
    x = 235,002.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.