Home / 385,109.40-577,664.10-118,846.20

Finding the Fourth Proportional to 385,109.40, 577,664.10 and 118,846.20

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Solution

The fourth proportional to 385,109.40, 577,664.10 and 118,846.20 is: 178,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,109.40 : 577,664.10 = 118,846.20 : x
  2. Step 2: Convert to fraction form
    385,109.40/577,664.10 = 118,846.20/x
  3. Step 3: Cross multiply
    385,109.40x = 577,664.10 × 118,846.20
  4. Step 4: Simplify right side
    385,109.40x = 68,653,183,161.42
  5. Step 5: Solve for x
    x = 68,653,183,161.42/385,109.40
  6. Step 6: Final answer
    x = 178,269.30

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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.