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Finding the Fourth Proportional to 282,632.55, 390,028.50 and 155,305.41

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Solution

The fourth proportional to 282,632.55, 390,028.50 and 155,305.41 is: 214,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,632.55 : 390,028.50 = 155,305.41 : x
  2. Step 2: Convert to fraction form
    282,632.55/390,028.50 = 155,305.41/x
  3. Step 3: Cross multiply
    282,632.55x = 390,028.50 × 155,305.41
  4. Step 4: Simplify right side
    282,632.55x = 60,573,536,104.19
  5. Step 5: Solve for x
    x = 60,573,536,104.19/282,632.55
  6. Step 6: Final answer
    x = 214,319.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.