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Finding the Fourth Proportional to 219,983.68, 303,348 and 130,542.40

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Solution

The fourth proportional to 219,983.68, 303,348 and 130,542.40 is: 180,012.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,983.68 : 303,348 = 130,542.40 : x
  2. Step 2: Convert to fraction form
    219,983.68/303,348 = 130,542.40/x
  3. Step 3: Cross multiply
    219,983.68x = 303,348 × 130,542.40
  4. Step 4: Simplify right side
    219,983.68x = 39,599,775,955.20
  5. Step 5: Solve for x
    x = 39,599,775,955.20/219,983.68
  6. Step 6: Final answer
    x = 180,012.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.