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Finding the Fourth Proportional to 328,242.10, 492,516.24 and 128,510.68

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Solution

The fourth proportional to 328,242.10, 492,516.24 and 128,510.68 is: 192,825.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,242.10 : 492,516.24 = 128,510.68 : x
  2. Step 2: Convert to fraction form
    328,242.10/492,516.24 = 128,510.68/x
  3. Step 3: Cross multiply
    328,242.10x = 492,516.24 × 128,510.68
  4. Step 4: Simplify right side
    328,242.10x = 63,293,596,913.44
  5. Step 5: Solve for x
    x = 63,293,596,913.44/328,242.10
  6. Step 6: Final answer
    x = 192,825.96

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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.