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Finding the Fourth Proportional to 485,191.68, 669,573.12 and 270,336

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Solution

The fourth proportional to 485,191.68, 669,573.12 and 270,336 is: 373,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,191.68 : 669,573.12 = 270,336 : x
  2. Step 2: Convert to fraction form
    485,191.68/669,573.12 = 270,336/x
  3. Step 3: Cross multiply
    485,191.68x = 669,573.12 × 270,336
  4. Step 4: Simplify right side
    485,191.68x = 181,009,718,968.32
  5. Step 5: Solve for x
    x = 181,009,718,968.32/485,191.68
  6. Step 6: Final answer
    x = 373,068.47

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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.