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Finding the Fourth Proportional to 540,142.74, 745,440.66 and 298,446.48

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Solution

The fourth proportional to 540,142.74, 745,440.66 and 298,446.48 is: 411,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,142.74 : 745,440.66 = 298,446.48 : x
  2. Step 2: Convert to fraction form
    540,142.74/745,440.66 = 298,446.48/x
  3. Step 3: Cross multiply
    540,142.74x = 745,440.66 × 298,446.48
  4. Step 4: Simplify right side
    540,142.74x = 222,474,141,025.88
  5. Step 5: Solve for x
    x = 222,474,141,025.88/540,142.74
  6. Step 6: Final answer
    x = 411,880.28

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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.