Home / 282,742.58-390,164.85-155,426.42

Finding the Fourth Proportional to 282,742.58, 390,164.85 and 155,426.42

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Solution

The fourth proportional to 282,742.58, 390,164.85 and 155,426.42 is: 214,477.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,742.58 : 390,164.85 = 155,426.42 : x
  2. Step 2: Convert to fraction form
    282,742.58/390,164.85 = 155,426.42/x
  3. Step 3: Cross multiply
    282,742.58x = 390,164.85 × 155,426.42
  4. Step 4: Simplify right side
    282,742.58x = 60,641,925,845.34
  5. Step 5: Solve for x
    x = 60,641,925,845.34/282,742.58
  6. Step 6: Final answer
    x = 214,477.51

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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.