Home / 385,208.40-577,725.12-185,426.80

Finding the Fourth Proportional to 385,208.40, 577,725.12 and 185,426.80

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Solution

The fourth proportional to 385,208.40, 577,725.12 and 185,426.80 is: 278,098.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,208.40 : 577,725.12 = 185,426.80 : x
  2. Step 2: Convert to fraction form
    385,208.40/577,725.12 = 185,426.80/x
  3. Step 3: Cross multiply
    385,208.40x = 577,725.12 × 185,426.80
  4. Step 4: Simplify right side
    385,208.40x = 107,125,720,281.22
  5. Step 5: Solve for x
    x = 107,125,720,281.22/385,208.40
  6. Step 6: Final answer
    x = 278,098.09

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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.