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Finding the Fourth Proportional to 328,536.27, 492,808.32 and 128,950.65

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Solution

The fourth proportional to 328,536.27, 492,808.32 and 128,950.65 is: 193,427.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,536.27 : 492,808.32 = 128,950.65 : x
  2. Step 2: Convert to fraction form
    328,536.27/492,808.32 = 128,950.65/x
  3. Step 3: Cross multiply
    328,536.27x = 492,808.32 × 128,950.65
  4. Step 4: Simplify right side
    328,536.27x = 63,547,953,189.41
  5. Step 5: Solve for x
    x = 63,547,953,189.41/328,536.27
  6. Step 6: Final answer
    x = 193,427.51

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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.