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Finding the Fourth Proportional to 450,140.80, 675,103.20 and 260,190.40

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Solution

The fourth proportional to 450,140.80, 675,103.20 and 260,190.40 is: 390,223.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,140.80 : 675,103.20 = 260,190.40 : x
  2. Step 2: Convert to fraction form
    450,140.80/675,103.20 = 260,190.40/x
  3. Step 3: Cross multiply
    450,140.80x = 675,103.20 × 260,190.40
  4. Step 4: Simplify right side
    450,140.80x = 175,655,371,649.28
  5. Step 5: Solve for x
    x = 175,655,371,649.28/450,140.80
  6. Step 6: Final answer
    x = 390,223.17

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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.