Home / 312,810.28-469,281.04-135,342.52

Finding the Fourth Proportional to 312,810.28, 469,281.04 and 135,342.52

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Solution

The fourth proportional to 312,810.28, 469,281.04 and 135,342.52 is: 203,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,810.28 : 469,281.04 = 135,342.52 : x
  2. Step 2: Convert to fraction form
    312,810.28/469,281.04 = 135,342.52/x
  3. Step 3: Cross multiply
    312,810.28x = 469,281.04 × 135,342.52
  4. Step 4: Simplify right side
    312,810.28x = 63,513,678,541.82
  5. Step 5: Solve for x
    x = 63,513,678,541.82/312,810.28
  6. Step 6: Final answer
    x = 203,042.17

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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.