Home / 289,728.48-434,335.12-109,688.56

Finding the Fourth Proportional to 289,728.48, 434,335.12 and 109,688.56

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Solution

The fourth proportional to 289,728.48, 434,335.12 and 109,688.56 is: 164,435.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,728.48 : 434,335.12 = 109,688.56 : x
  2. Step 2: Convert to fraction form
    289,728.48/434,335.12 = 109,688.56/x
  3. Step 3: Cross multiply
    289,728.48x = 434,335.12 × 109,688.56
  4. Step 4: Simplify right side
    289,728.48x = 47,641,593,870.23
  5. Step 5: Solve for x
    x = 47,641,593,870.23/289,728.48
  6. Step 6: Final answer
    x = 164,435.31

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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.