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Finding the Fourth Proportional to 353,756.91, 488,478.42 and 328,114.47

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Solution

The fourth proportional to 353,756.91, 488,478.42 and 328,114.47 is: 453,070.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,756.91 : 488,478.42 = 328,114.47 : x
  2. Step 2: Convert to fraction form
    353,756.91/488,478.42 = 328,114.47/x
  3. Step 3: Cross multiply
    353,756.91x = 488,478.42 × 328,114.47
  4. Step 4: Simplify right side
    353,756.91x = 160,276,837,884.74
  5. Step 5: Solve for x
    x = 160,276,837,884.74/353,756.91
  6. Step 6: Final answer
    x = 453,070.55

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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.