Home / 212,080.28-317,428.08-155,905.52

Finding the Fourth Proportional to 212,080.28, 317,428.08 and 155,905.52

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Solution

The fourth proportional to 212,080.28, 317,428.08 and 155,905.52 is: 233,349.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,080.28 : 317,428.08 = 155,905.52 : x
  2. Step 2: Convert to fraction form
    212,080.28/317,428.08 = 155,905.52/x
  3. Step 3: Cross multiply
    212,080.28x = 317,428.08 × 155,905.52
  4. Step 4: Simplify right side
    212,080.28x = 49,488,789,875.00
  5. Step 5: Solve for x
    x = 49,488,789,875.00/212,080.28
  6. Step 6: Final answer
    x = 233,349.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.