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Finding the Fourth Proportional to 389,445.40, 583,730.70 and 164,767.60

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Solution

The fourth proportional to 389,445.40, 583,730.70 and 164,767.60 is: 246,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,445.40 : 583,730.70 = 164,767.60 : x
  2. Step 2: Convert to fraction form
    389,445.40/583,730.70 = 164,767.60/x
  3. Step 3: Cross multiply
    389,445.40x = 583,730.70 × 164,767.60
  4. Step 4: Simplify right side
    389,445.40x = 96,179,906,485.32
  5. Step 5: Solve for x
    x = 96,179,906,485.32/389,445.40
  6. Step 6: Final answer
    x = 246,966.34

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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.