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Finding the Fourth Proportional to 389,701.60, 584,552.40 and 263,730.40

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Solution

The fourth proportional to 389,701.60, 584,552.40 and 263,730.40 is: 395,595.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,701.60 : 584,552.40 = 263,730.40 : x
  2. Step 2: Convert to fraction form
    389,701.60/584,552.40 = 263,730.40/x
  3. Step 3: Cross multiply
    389,701.60x = 584,552.40 × 263,730.40
  4. Step 4: Simplify right side
    389,701.60x = 154,164,238,272.96
  5. Step 5: Solve for x
    x = 154,164,238,272.96/389,701.60
  6. Step 6: Final answer
    x = 395,595.60

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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.