Home / 287,394,297.12-396,604,289.16-155,235,293.04

Finding the Fourth Proportional to 287,394,297.12, 396,604,289.16 and 155,235,293.04

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Solution

The fourth proportional to 287,394,297.12, 396,604,289.16 and 155,235,293.04 is: 214,224,790.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,394,297.12 : 396,604,289.16 = 155,235,293.04 : x
  2. Step 2: Convert to fraction form
    287,394,297.12/396,604,289.16 = 155,235,293.04/x
  3. Step 3: Cross multiply
    287,394,297.12x = 396,604,289.16 × 155,235,293.04
  4. Step 4: Simplify right side
    287,394,297.12x = 61,566,983,048,673,496
  5. Step 5: Solve for x
    x = 61,566,983,048,673,496/287,394,297.12
  6. Step 6: Final answer
    x = 214,224,790.35

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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.