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Finding the Fourth Proportional to 328,614.98, 492,732.32 and 128,701.31

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Solution

The fourth proportional to 328,614.98, 492,732.32 and 128,701.31 is: 192,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,614.98 : 492,732.32 = 128,701.31 : x
  2. Step 2: Convert to fraction form
    328,614.98/492,732.32 = 128,701.31/x
  3. Step 3: Cross multiply
    328,614.98x = 492,732.32 × 128,701.31
  4. Step 4: Simplify right side
    328,614.98x = 63,415,291,956.17
  5. Step 5: Solve for x
    x = 63,415,291,956.17/328,614.98
  6. Step 6: Final answer
    x = 192,977.49

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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.