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Finding the Fourth Proportional to 538,160.60, 742,665.40 and 308,727.90

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Solution

The fourth proportional to 538,160.60, 742,665.40 and 308,727.90 is: 426,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,160.60 : 742,665.40 = 308,727.90 : x
  2. Step 2: Convert to fraction form
    538,160.60/742,665.40 = 308,727.90/x
  3. Step 3: Cross multiply
    538,160.60x = 742,665.40 × 308,727.90
  4. Step 4: Simplify right side
    538,160.60x = 229,281,529,344.66
  5. Step 5: Solve for x
    x = 229,281,529,344.66/538,160.60
  6. Step 6: Final answer
    x = 426,046.67

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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.