Home / 282,435.12-389,762.28-155,109.60

Finding the Fourth Proportional to 282,435.12, 389,762.28 and 155,109.60

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Solution

The fourth proportional to 282,435.12, 389,762.28 and 155,109.60 is: 214,052.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,435.12 : 389,762.28 = 155,109.60 : x
  2. Step 2: Convert to fraction form
    282,435.12/389,762.28 = 155,109.60/x
  3. Step 3: Cross multiply
    282,435.12x = 389,762.28 × 155,109.60
  4. Step 4: Simplify right side
    282,435.12x = 60,455,871,345.89
  5. Step 5: Solve for x
    x = 60,455,871,345.89/282,435.12
  6. Step 6: Final answer
    x = 214,052.24

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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.