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Finding the Fourth Proportional to 370,287.63, 555,403.59 and 133,630.29

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Solution

The fourth proportional to 370,287.63, 555,403.59 and 133,630.29 is: 200,435.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,287.63 : 555,403.59 = 133,630.29 : x
  2. Step 2: Convert to fraction form
    370,287.63/555,403.59 = 133,630.29/x
  3. Step 3: Cross multiply
    370,287.63x = 555,403.59 × 133,630.29
  4. Step 4: Simplify right side
    370,287.63x = 74,218,742,798.74
  5. Step 5: Solve for x
    x = 74,218,742,798.74/370,287.63
  6. Step 6: Final answer
    x = 200,435.38

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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.