Home / 487,801.20-731,483.10-221,424.60

Finding the Fourth Proportional to 487,801.20, 731,483.10 and 221,424.60

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Solution

The fourth proportional to 487,801.20, 731,483.10 and 221,424.60 is: 332,037.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,801.20 : 731,483.10 = 221,424.60 : x
  2. Step 2: Convert to fraction form
    487,801.20/731,483.10 = 221,424.60/x
  3. Step 3: Cross multiply
    487,801.20x = 731,483.10 × 221,424.60
  4. Step 4: Simplify right side
    487,801.20x = 161,968,352,824.26
  5. Step 5: Solve for x
    x = 161,968,352,824.26/487,801.20
  6. Step 6: Final answer
    x = 332,037.63

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1.5x scale

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.