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Finding the Fourth Proportional to 385,599.84, 532,139.04 and 215,829.60

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Solution

The fourth proportional to 385,599.84, 532,139.04 and 215,829.60 is: 297,851.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,599.84 : 532,139.04 = 215,829.60 : x
  2. Step 2: Convert to fraction form
    385,599.84/532,139.04 = 215,829.60/x
  3. Step 3: Cross multiply
    385,599.84x = 532,139.04 × 215,829.60
  4. Step 4: Simplify right side
    385,599.84x = 114,851,356,147.58
  5. Step 5: Solve for x
    x = 114,851,356,147.58/385,599.84
  6. Step 6: Final answer
    x = 297,851.15

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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.