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Finding the Fourth Proportional to 305,762.60, 458,643.90 and 293,515.40

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Solution

The fourth proportional to 305,762.60, 458,643.90 and 293,515.40 is: 440,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,762.60 : 458,643.90 = 293,515.40 : x
  2. Step 2: Convert to fraction form
    305,762.60/458,643.90 = 293,515.40/x
  3. Step 3: Cross multiply
    305,762.60x = 458,643.90 × 293,515.40
  4. Step 4: Simplify right side
    305,762.60x = 134,619,047,766.06
  5. Step 5: Solve for x
    x = 134,619,047,766.06/305,762.60
  6. Step 6: Final answer
    x = 440,273.10

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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.