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Finding the Fourth Proportional to 282,484, 389,828.28 and 155,162.08

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Solution

The fourth proportional to 282,484, 389,828.28 and 155,162.08 is: 214,123.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,484 : 389,828.28 = 155,162.08 : x
  2. Step 2: Convert to fraction form
    282,484/389,828.28 = 155,162.08/x
  3. Step 3: Cross multiply
    282,484x = 389,828.28 × 155,162.08
  4. Step 4: Simplify right side
    282,484x = 60,486,566,767.62
  5. Step 5: Solve for x
    x = 60,486,566,767.62/282,484
  6. Step 6: Final answer
    x = 214,123.87

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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.