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Finding the Fourth Proportional to 384,877.80, 577,329.90 and 118,636.20

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Solution

The fourth proportional to 384,877.80, 577,329.90 and 118,636.20 is: 177,958.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,877.80 : 577,329.90 = 118,636.20 : x
  2. Step 2: Convert to fraction form
    384,877.80/577,329.90 = 118,636.20/x
  3. Step 3: Cross multiply
    384,877.80x = 577,329.90 × 118,636.20
  4. Step 4: Simplify right side
    384,877.80x = 68,492,225,482.38
  5. Step 5: Solve for x
    x = 68,492,225,482.38/384,877.80
  6. Step 6: Final answer
    x = 177,958.37

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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.