Home / 287,272.20-430,908.30-145,554.60

Finding the Fourth Proportional to 287,272.20, 430,908.30 and 145,554.60

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Solution

The fourth proportional to 287,272.20, 430,908.30 and 145,554.60 is: 218,331.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,272.20 : 430,908.30 = 145,554.60 : x
  2. Step 2: Convert to fraction form
    287,272.20/430,908.30 = 145,554.60/x
  3. Step 3: Cross multiply
    287,272.20x = 430,908.30 × 145,554.60
  4. Step 4: Simplify right side
    287,272.20x = 62,720,685,243.18
  5. Step 5: Solve for x
    x = 62,720,685,243.18/287,272.20
  6. Step 6: Final answer
    x = 218,331.90

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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.