Home / 287,214.60-430,821.90-73,982.10

Finding the Fourth Proportional to 287,214.60, 430,821.90 and 73,982.10

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Solution

The fourth proportional to 287,214.60, 430,821.90 and 73,982.10 is: 110,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,214.60 : 430,821.90 = 73,982.10 : x
  2. Step 2: Convert to fraction form
    287,214.60/430,821.90 = 73,982.10/x
  3. Step 3: Cross multiply
    287,214.60x = 430,821.90 × 73,982.10
  4. Step 4: Simplify right side
    287,214.60x = 31,873,108,887.99
  5. Step 5: Solve for x
    x = 31,873,108,887.99/287,214.60
  6. Step 6: Final answer
    x = 110,973.15

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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.