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Finding the Fourth Proportional to 305,433.60, 458,150.40 and 210,955.20

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Solution

The fourth proportional to 305,433.60, 458,150.40 and 210,955.20 is: 316,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,433.60 : 458,150.40 = 210,955.20 : x
  2. Step 2: Convert to fraction form
    305,433.60/458,150.40 = 210,955.20/x
  3. Step 3: Cross multiply
    305,433.60x = 458,150.40 × 210,955.20
  4. Step 4: Simplify right side
    305,433.60x = 96,649,209,262.08
  5. Step 5: Solve for x
    x = 96,649,209,262.08/305,433.60
  6. Step 6: Final answer
    x = 316,432.80

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1.5x scale

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.