Home / 280,815.84-387,526.05-153,491.43

Finding the Fourth Proportional to 280,815.84, 387,526.05 and 153,491.43

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Solution

The fourth proportional to 280,815.84, 387,526.05 and 153,491.43 is: 211,818.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,815.84 : 387,526.05 = 153,491.43 : x
  2. Step 2: Convert to fraction form
    280,815.84/387,526.05 = 153,491.43/x
  3. Step 3: Cross multiply
    280,815.84x = 387,526.05 × 153,491.43
  4. Step 4: Simplify right side
    280,815.84x = 59,481,927,576.75
  5. Step 5: Solve for x
    x = 59,481,927,576.75/280,815.84
  6. Step 6: Final answer
    x = 211,818.28

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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.