Home / 289,719.52-434,579.64-79,359.28

Finding the Fourth Proportional to 289,719.52, 434,579.64 and 79,359.28

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Solution

The fourth proportional to 289,719.52, 434,579.64 and 79,359.28 is: 119,039.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,719.52 : 434,579.64 = 79,359.28 : x
  2. Step 2: Convert to fraction form
    289,719.52/434,579.64 = 79,359.28/x
  3. Step 3: Cross multiply
    289,719.52x = 434,579.64 × 79,359.28
  4. Step 4: Simplify right side
    289,719.52x = 34,487,927,333.06
  5. Step 5: Solve for x
    x = 34,487,927,333.06/289,719.52
  6. Step 6: Final answer
    x = 119,039.02

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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.