Home / 487,916.20-731,528.70-221,804.20

Finding the Fourth Proportional to 487,916.20, 731,528.70 and 221,804.20

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Solution

The fourth proportional to 487,916.20, 731,528.70 and 221,804.20 is: 332,549.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,916.20 : 731,528.70 = 221,804.20 : x
  2. Step 2: Convert to fraction form
    487,916.20/731,528.70 = 221,804.20/x
  3. Step 3: Cross multiply
    487,916.20x = 731,528.70 × 221,804.20
  4. Step 4: Simplify right side
    487,916.20x = 162,256,138,080.54
  5. Step 5: Solve for x
    x = 162,256,138,080.54/487,916.20
  6. Step 6: Final answer
    x = 332,549.19

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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.