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Finding the Fourth Proportional to 343,491.60, 515,237.40 and 144,037.20

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Solution

The fourth proportional to 343,491.60, 515,237.40 and 144,037.20 is: 216,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,491.60 : 515,237.40 = 144,037.20 : x
  2. Step 2: Convert to fraction form
    343,491.60/515,237.40 = 144,037.20/x
  3. Step 3: Cross multiply
    343,491.60x = 515,237.40 × 144,037.20
  4. Step 4: Simplify right side
    343,491.60x = 74,213,352,431.28
  5. Step 5: Solve for x
    x = 74,213,352,431.28/343,491.60
  6. Step 6: Final answer
    x = 216,055.80

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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.