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Finding the Fourth Proportional to 328,357.90, 492,564.79 and 103,658.23

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Solution

The fourth proportional to 328,357.90, 492,564.79 and 103,658.23 is: 155,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,357.90 : 492,564.79 = 103,658.23 : x
  2. Step 2: Convert to fraction form
    328,357.90/492,564.79 = 103,658.23/x
  3. Step 3: Cross multiply
    328,357.90x = 492,564.79 × 103,658.23
  4. Step 4: Simplify right side
    328,357.90x = 51,058,391,828.90
  5. Step 5: Solve for x
    x = 51,058,391,828.90/328,357.90
  6. Step 6: Final answer
    x = 155,496.16

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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.