Home / 282,964.26-390,482.45-155,639.82

Finding the Fourth Proportional to 282,964.26, 390,482.45 and 155,639.82

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Solution

The fourth proportional to 282,964.26, 390,482.45 and 155,639.82 is: 214,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,964.26 : 390,482.45 = 155,639.82 : x
  2. Step 2: Convert to fraction form
    282,964.26/390,482.45 = 155,639.82/x
  3. Step 3: Cross multiply
    282,964.26x = 390,482.45 × 155,639.82
  4. Step 4: Simplify right side
    282,964.26x = 60,774,615,500.55
  5. Step 5: Solve for x
    x = 60,774,615,500.55/282,964.26
  6. Step 6: Final answer
    x = 214,778.42

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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.