Home / 328,243.60-492,518.49-128,512.18

Finding the Fourth Proportional to 328,243.60, 492,518.49 and 128,512.18

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Solution

The fourth proportional to 328,243.60, 492,518.49 and 128,512.18 is: 192,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,243.60 : 492,518.49 = 128,512.18 : x
  2. Step 2: Convert to fraction form
    328,243.60/492,518.49 = 128,512.18/x
  3. Step 3: Cross multiply
    328,243.60x = 492,518.49 × 128,512.18
  4. Step 4: Simplify right side
    328,243.60x = 63,294,624,840.21
  5. Step 5: Solve for x
    x = 63,294,624,840.21/328,243.60
  6. Step 6: Final answer
    x = 192,828.21

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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.