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Finding the Fourth Proportional to 385,586.33, 532,108.71 and 215,820.45

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Solution

The fourth proportional to 385,586.33, 532,108.71 and 215,820.45 is: 297,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,586.33 : 532,108.71 = 215,820.45 : x
  2. Step 2: Convert to fraction form
    385,586.33/532,108.71 = 215,820.45/x
  3. Step 3: Cross multiply
    385,586.33x = 532,108.71 × 215,820.45
  4. Step 4: Simplify right side
    385,586.33x = 114,839,941,241.12
  5. Step 5: Solve for x
    x = 114,839,941,241.12/385,586.33
  6. Step 6: Final answer
    x = 297,831.98

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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.