Home / 282,621.22-390,018.57-155,299.30

Finding the Fourth Proportional to 282,621.22, 390,018.57 and 155,299.30

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Solution

The fourth proportional to 282,621.22, 390,018.57 and 155,299.30 is: 214,313.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,621.22 : 390,018.57 = 155,299.30 : x
  2. Step 2: Convert to fraction form
    282,621.22/390,018.57 = 155,299.30/x
  3. Step 3: Cross multiply
    282,621.22x = 390,018.57 × 155,299.30
  4. Step 4: Simplify right side
    282,621.22x = 60,569,610,908.00
  5. Step 5: Solve for x
    x = 60,569,610,908.00/282,621.22
  6. Step 6: Final answer
    x = 214,313.74

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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.