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Finding the Fourth Proportional to 385,059.07, 577,605 and 118,813.69

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Solution

The fourth proportional to 385,059.07, 577,605 and 118,813.69 is: 178,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,059.07 : 577,605 = 118,813.69 : x
  2. Step 2: Convert to fraction form
    385,059.07/577,605 = 118,813.69/x
  3. Step 3: Cross multiply
    385,059.07x = 577,605 × 118,813.69
  4. Step 4: Simplify right side
    385,059.07x = 68,627,381,412.45
  5. Step 5: Solve for x
    x = 68,627,381,412.45/385,059.07
  6. Step 6: Final answer
    x = 178,225.59

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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.