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Finding the Fourth Proportional to 309,646.56, 427,318.68 and 175,510.56

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Solution

The fourth proportional to 309,646.56, 427,318.68 and 175,510.56 is: 242,208.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,646.56 : 427,318.68 = 175,510.56 : x
  2. Step 2: Convert to fraction form
    309,646.56/427,318.68 = 175,510.56/x
  3. Step 3: Cross multiply
    309,646.56x = 427,318.68 × 175,510.56
  4. Step 4: Simplify right side
    309,646.56x = 74,998,940,825.26
  5. Step 5: Solve for x
    x = 74,998,940,825.26/309,646.56
  6. Step 6: Final answer
    x = 242,208.22

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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.