Home / 385,290.48-531,671.88-215,491.80

Finding the Fourth Proportional to 385,290.48, 531,671.88 and 215,491.80

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Solution

The fourth proportional to 385,290.48, 531,671.88 and 215,491.80 is: 297,362.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,290.48 : 531,671.88 = 215,491.80 : x
  2. Step 2: Convert to fraction form
    385,290.48/531,671.88 = 215,491.80/x
  3. Step 3: Cross multiply
    385,290.48x = 531,671.88 × 215,491.80
  4. Step 4: Simplify right side
    385,290.48x = 114,570,930,430.58
  5. Step 5: Solve for x
    x = 114,570,930,430.58/385,290.48
  6. Step 6: Final answer
    x = 297,362.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.