Home / 280,515.90-387,115.02-153,195.24

Finding the Fourth Proportional to 280,515.90, 387,115.02 and 153,195.24

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Solution

The fourth proportional to 280,515.90, 387,115.02 and 153,195.24 is: 211,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,515.90 : 387,115.02 = 153,195.24 : x
  2. Step 2: Convert to fraction form
    280,515.90/387,115.02 = 153,195.24/x
  3. Step 3: Cross multiply
    280,515.90x = 387,115.02 × 153,195.24
  4. Step 4: Simplify right side
    280,515.90x = 59,304,178,396.50
  5. Step 5: Solve for x
    x = 59,304,178,396.50/280,515.90
  6. Step 6: Final answer
    x = 211,411.11

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1.5x scale

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.