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Finding the Fourth Proportional to 385,548.52, 532,056.90 and 215,782.64

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Solution

The fourth proportional to 385,548.52, 532,056.90 and 215,782.64 is: 297,780.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,548.52 : 532,056.90 = 215,782.64 : x
  2. Step 2: Convert to fraction form
    385,548.52/532,056.90 = 215,782.64/x
  3. Step 3: Cross multiply
    385,548.52x = 532,056.90 × 215,782.64
  4. Step 4: Simplify right side
    385,548.52x = 114,808,642,512.22
  5. Step 5: Solve for x
    x = 114,808,642,512.22/385,548.52
  6. Step 6: Final answer
    x = 297,780.01

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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.