Home / 328,420.14-492,432.21-128,501.82

Finding the Fourth Proportional to 328,420.14, 492,432.21 and 128,501.82

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Solution

The fourth proportional to 328,420.14, 492,432.21 and 128,501.82 is: 192,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,420.14 : 492,432.21 = 128,501.82 : x
  2. Step 2: Convert to fraction form
    328,420.14/492,432.21 = 128,501.82/x
  3. Step 3: Cross multiply
    328,420.14x = 492,432.21 × 128,501.82
  4. Step 4: Simplify right side
    328,420.14x = 63,278,435,211.62
  5. Step 5: Solve for x
    x = 63,278,435,211.62/328,420.14
  6. Step 6: Final answer
    x = 192,675.26

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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.