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Finding the Fourth Proportional to 385,261.70, 577,892.55 and 245,639.30

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Solution

The fourth proportional to 385,261.70, 577,892.55 and 245,639.30 is: 368,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,261.70 : 577,892.55 = 245,639.30 : x
  2. Step 2: Convert to fraction form
    385,261.70/577,892.55 = 245,639.30/x
  3. Step 3: Cross multiply
    385,261.70x = 577,892.55 × 245,639.30
  4. Step 4: Simplify right side
    385,261.70x = 141,953,121,457.22
  5. Step 5: Solve for x
    x = 141,953,121,457.22/385,261.70
  6. Step 6: Final answer
    x = 368,458.95

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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.