Home / 345,569.28-518,409.50-120,924.72

Finding the Fourth Proportional to 345,569.28, 518,409.50 and 120,924.72

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Solution

The fourth proportional to 345,569.28, 518,409.50 and 120,924.72 is: 181,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,569.28 : 518,409.50 = 120,924.72 : x
  2. Step 2: Convert to fraction form
    345,569.28/518,409.50 = 120,924.72/x
  3. Step 3: Cross multiply
    345,569.28x = 518,409.50 × 120,924.72
  4. Step 4: Simplify right side
    345,569.28x = 62,688,523,632.84
  5. Step 5: Solve for x
    x = 62,688,523,632.84/345,569.28
  6. Step 6: Final answer
    x = 181,406.53

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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.