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Finding the Fourth Proportional to 309,392.81, 464,089.58 and 84,755.17

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Solution

The fourth proportional to 309,392.81, 464,089.58 and 84,755.17 is: 127,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,392.81 : 464,089.58 = 84,755.17 : x
  2. Step 2: Convert to fraction form
    309,392.81/464,089.58 = 84,755.17/x
  3. Step 3: Cross multiply
    309,392.81x = 464,089.58 × 84,755.17
  4. Step 4: Simplify right side
    309,392.81x = 39,333,992,199.04
  5. Step 5: Solve for x
    x = 39,333,992,199.04/309,392.81
  6. Step 6: Final answer
    x = 127,132.86

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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.