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Finding the Fourth Proportional to 389,360.68, 537,316.72 and 217,276.82

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Solution

The fourth proportional to 389,360.68, 537,316.72 and 217,276.82 is: 299,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,360.68 : 537,316.72 = 217,276.82 : x
  2. Step 2: Convert to fraction form
    389,360.68/537,316.72 = 217,276.82/x
  3. Step 3: Cross multiply
    389,360.68x = 537,316.72 × 217,276.82
  4. Step 4: Simplify right side
    389,360.68x = 116,746,465,567.85
  5. Step 5: Solve for x
    x = 116,746,465,567.85/389,360.68
  6. Step 6: Final answer
    x = 299,841.44

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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.