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Finding the Fourth Proportional to 328,344.72, 492,429.44 and 91,645.76

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Solution

The fourth proportional to 328,344.72, 492,429.44 and 91,645.76 is: 137,444.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,344.72 : 492,429.44 = 91,645.76 : x
  2. Step 2: Convert to fraction form
    328,344.72/492,429.44 = 91,645.76/x
  3. Step 3: Cross multiply
    328,344.72x = 492,429.44 × 91,645.76
  4. Step 4: Simplify right side
    328,344.72x = 45,129,070,275.17
  5. Step 5: Solve for x
    x = 45,129,070,275.17/328,344.72
  6. Step 6: Final answer
    x = 137,444.18

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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.