Home / 385,284.96-577,828-115,359.84

Finding the Fourth Proportional to 385,284.96, 577,828 and 115,359.84

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Solution

The fourth proportional to 385,284.96, 577,828 and 115,359.84 is: 173,009.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,284.96 : 577,828 = 115,359.84 : x
  2. Step 2: Convert to fraction form
    385,284.96/577,828 = 115,359.84/x
  3. Step 3: Cross multiply
    385,284.96x = 577,828 × 115,359.84
  4. Step 4: Simplify right side
    385,284.96x = 66,658,145,627.52
  5. Step 5: Solve for x
    x = 66,658,145,627.52/385,284.96
  6. Step 6: Final answer
    x = 173,009.99

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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.