Home / 282,378.63-389,685.24-155,056.95

Finding the Fourth Proportional to 282,378.63, 389,685.24 and 155,056.95

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Solution

The fourth proportional to 282,378.63, 389,685.24 and 155,056.95 is: 213,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,378.63 : 389,685.24 = 155,056.95 : x
  2. Step 2: Convert to fraction form
    282,378.63/389,685.24 = 155,056.95/x
  3. Step 3: Cross multiply
    282,378.63x = 389,685.24 × 155,056.95
  4. Step 4: Simplify right side
    282,378.63x = 60,423,405,360.99
  5. Step 5: Solve for x
    x = 60,423,405,360.99/282,378.63
  6. Step 6: Final answer
    x = 213,980.10

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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.