Home / 386,478.60-579,961.10-164,859.40

Finding the Fourth Proportional to 386,478.60, 579,961.10 and 164,859.40

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Solution

The fourth proportional to 386,478.60, 579,961.10 and 164,859.40 is: 247,392.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,478.60 : 579,961.10 = 164,859.40 : x
  2. Step 2: Convert to fraction form
    386,478.60/579,961.10 = 164,859.40/x
  3. Step 3: Cross multiply
    386,478.60x = 579,961.10 × 164,859.40
  4. Step 4: Simplify right side
    386,478.60x = 95,612,038,969.34
  5. Step 5: Solve for x
    x = 95,612,038,969.34/386,478.60
  6. Step 6: Final answer
    x = 247,392.84

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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.