Home / 348,020.70-521,253.45-285,812.70

Finding the Fourth Proportional to 348,020.70, 521,253.45 and 285,812.70

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Solution

The fourth proportional to 348,020.70, 521,253.45 and 285,812.70 is: 428,080.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,020.70 : 521,253.45 = 285,812.70 : x
  2. Step 2: Convert to fraction form
    348,020.70/521,253.45 = 285,812.70/x
  3. Step 3: Cross multiply
    348,020.70x = 521,253.45 × 285,812.70
  4. Step 4: Simplify right side
    348,020.70x = 148,980,855,928.82
  5. Step 5: Solve for x
    x = 148,980,855,928.82/348,020.70
  6. Step 6: Final answer
    x = 428,080.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.