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Finding the Fourth Proportional to 216,486.47, 298,765.95 and 125,842.15

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Solution

The fourth proportional to 216,486.47, 298,765.95 and 125,842.15 is: 173,670.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,486.47 : 298,765.95 = 125,842.15 : x
  2. Step 2: Convert to fraction form
    216,486.47/298,765.95 = 125,842.15/x
  3. Step 3: Cross multiply
    216,486.47x = 298,765.95 × 125,842.15
  4. Step 4: Simplify right side
    216,486.47x = 37,597,349,494.79
  5. Step 5: Solve for x
    x = 37,597,349,494.79/216,486.47
  6. Step 6: Final answer
    x = 173,670.67

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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.