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Finding the Fourth Proportional to 305,362.20, 458,043.30 and 256,373.40

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Solution

The fourth proportional to 305,362.20, 458,043.30 and 256,373.40 is: 384,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,362.20 : 458,043.30 = 256,373.40 : x
  2. Step 2: Convert to fraction form
    305,362.20/458,043.30 = 256,373.40/x
  3. Step 3: Cross multiply
    305,362.20x = 458,043.30 × 256,373.40
  4. Step 4: Simplify right side
    305,362.20x = 117,430,118,168.22
  5. Step 5: Solve for x
    x = 117,430,118,168.22/305,362.20
  6. Step 6: Final answer
    x = 384,560.10

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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.