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Finding the Fourth Proportional to 527,130.90, 790,693.73 and 127,771.67

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Solution

The fourth proportional to 527,130.90, 790,693.73 and 127,771.67 is: 191,656.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,130.90 : 790,693.73 = 127,771.67 : x
  2. Step 2: Convert to fraction form
    527,130.90/790,693.73 = 127,771.67/x
  3. Step 3: Cross multiply
    527,130.90x = 790,693.73 × 127,771.67
  4. Step 4: Simplify right side
    527,130.90x = 101,028,258,340.63
  5. Step 5: Solve for x
    x = 101,028,258,340.63/527,130.90
  6. Step 6: Final answer
    x = 191,656.87

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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.