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Finding the Fourth Proportional to 242,920.76, 335,231.23 and 135,497.75

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Solution

The fourth proportional to 242,920.76, 335,231.23 and 135,497.75 is: 186,987.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,920.76 : 335,231.23 = 135,497.75 : x
  2. Step 2: Convert to fraction form
    242,920.76/335,231.23 = 135,497.75/x
  3. Step 3: Cross multiply
    242,920.76x = 335,231.23 × 135,497.75
  4. Step 4: Simplify right side
    242,920.76x = 45,423,075,379.83
  5. Step 5: Solve for x
    x = 45,423,075,379.83/242,920.76
  6. Step 6: Final answer
    x = 186,987.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.