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Finding the Fourth Proportional to 450,062.80, 674,986.20 and 260,112.40

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Solution

The fourth proportional to 450,062.80, 674,986.20 and 260,112.40 is: 390,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,062.80 : 674,986.20 = 260,112.40 : x
  2. Step 2: Convert to fraction form
    450,062.80/674,986.20 = 260,112.40/x
  3. Step 3: Cross multiply
    450,062.80x = 674,986.20 × 260,112.40
  4. Step 4: Simplify right side
    450,062.80x = 175,572,280,448.88
  5. Step 5: Solve for x
    x = 175,572,280,448.88/450,062.80
  6. Step 6: Final answer
    x = 390,106.18

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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.