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Finding the Fourth Proportional to 298,710.80, 448,066.20 and 266,051.60

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Solution

The fourth proportional to 298,710.80, 448,066.20 and 266,051.60 is: 399,077.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,710.80 : 448,066.20 = 266,051.60 : x
  2. Step 2: Convert to fraction form
    298,710.80/448,066.20 = 266,051.60/x
  3. Step 3: Cross multiply
    298,710.80x = 448,066.20 × 266,051.60
  4. Step 4: Simplify right side
    298,710.80x = 119,208,729,415.92
  5. Step 5: Solve for x
    x = 119,208,729,415.92/298,710.80
  6. Step 6: Final answer
    x = 399,077.40

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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.