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Finding the Fourth Proportional to 270,626.80, 406,030.38 and 90,730.01

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Solution

The fourth proportional to 270,626.80, 406,030.38 and 90,730.01 is: 136,125.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,626.80 : 406,030.38 = 90,730.01 : x
  2. Step 2: Convert to fraction form
    270,626.80/406,030.38 = 90,730.01/x
  3. Step 3: Cross multiply
    270,626.80x = 406,030.38 × 90,730.01
  4. Step 4: Simplify right side
    270,626.80x = 36,839,139,984.05
  5. Step 5: Solve for x
    x = 36,839,139,984.05/270,626.80
  6. Step 6: Final answer
    x = 136,125.25

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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.