Home / 386,579.48-579,730.28-133,791.40

Finding the Fourth Proportional to 386,579.48, 579,730.28 and 133,791.40

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Solution

The fourth proportional to 386,579.48, 579,730.28 and 133,791.40 is: 200,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,579.48 : 579,730.28 = 133,791.40 : x
  2. Step 2: Convert to fraction form
    386,579.48/579,730.28 = 133,791.40/x
  3. Step 3: Cross multiply
    386,579.48x = 579,730.28 × 133,791.40
  4. Step 4: Simplify right side
    386,579.48x = 77,562,925,783.59
  5. Step 5: Solve for x
    x = 77,562,925,783.59/386,579.48
  6. Step 6: Final answer
    x = 200,639.01

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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.