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Finding the Fourth Proportional to 205,841.80, 308,762.70 and 87,483.40

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Solution

The fourth proportional to 205,841.80, 308,762.70 and 87,483.40 is: 131,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,841.80 : 308,762.70 = 87,483.40 : x
  2. Step 2: Convert to fraction form
    205,841.80/308,762.70 = 87,483.40/x
  3. Step 3: Cross multiply
    205,841.80x = 308,762.70 × 87,483.40
  4. Step 4: Simplify right side
    205,841.80x = 27,011,610,789.18
  5. Step 5: Solve for x
    x = 27,011,610,789.18/205,841.80
  6. Step 6: Final answer
    x = 131,225.10

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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.