Home / 280,559.43-387,172.02-153,235.35

Finding the Fourth Proportional to 280,559.43, 387,172.02 and 153,235.35

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Solution

The fourth proportional to 280,559.43, 387,172.02 and 153,235.35 is: 211,464.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,559.43 : 387,172.02 = 153,235.35 : x
  2. Step 2: Convert to fraction form
    280,559.43/387,172.02 = 153,235.35/x
  3. Step 3: Cross multiply
    280,559.43x = 387,172.02 × 153,235.35
  4. Step 4: Simplify right side
    280,559.43x = 59,328,439,994.91
  5. Step 5: Solve for x
    x = 59,328,439,994.91/280,559.43
  6. Step 6: Final answer
    x = 211,464.79

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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.