Home / 282,716.64-390,143.96-155,392.20

Finding the Fourth Proportional to 282,716.64, 390,143.96 and 155,392.20

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Solution

The fourth proportional to 282,716.64, 390,143.96 and 155,392.20 is: 214,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,716.64 : 390,143.96 = 155,392.20 : x
  2. Step 2: Convert to fraction form
    282,716.64/390,143.96 = 155,392.20/x
  3. Step 3: Cross multiply
    282,716.64x = 390,143.96 × 155,392.20
  4. Step 4: Simplify right side
    282,716.64x = 60,625,328,261.11
  5. Step 5: Solve for x
    x = 60,625,328,261.11/282,716.64
  6. Step 6: Final answer
    x = 214,438.49

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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.