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Finding the Fourth Proportional to 385,109.29, 577,441.59 and 118,798.30

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Solution

The fourth proportional to 385,109.29, 577,441.59 and 118,798.30 is: 178,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,109.29 : 577,441.59 = 118,798.30 : x
  2. Step 2: Convert to fraction form
    385,109.29/577,441.59 = 118,798.30/x
  3. Step 3: Cross multiply
    385,109.29x = 577,441.59 × 118,798.30
  4. Step 4: Simplify right side
    385,109.29x = 68,599,078,647.31
  5. Step 5: Solve for x
    x = 68,599,078,647.31/385,109.29
  6. Step 6: Final answer
    x = 178,128.86

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1.5x scale

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.