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Finding the Fourth Proportional to 289,678.80, 433,999.80 and 248,206.80

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Solution

The fourth proportional to 289,678.80, 433,999.80 and 248,206.80 is: 371,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,678.80 : 433,999.80 = 248,206.80 : x
  2. Step 2: Convert to fraction form
    289,678.80/433,999.80 = 248,206.80/x
  3. Step 3: Cross multiply
    289,678.80x = 433,999.80 × 248,206.80
  4. Step 4: Simplify right side
    289,678.80x = 107,721,701,558.64
  5. Step 5: Solve for x
    x = 107,721,701,558.64/289,678.80
  6. Step 6: Final answer
    x = 371,866.02

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1.5x scale

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.