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Finding the Fourth Proportional to 209,488.80, 315,010.80 and 175,274.40

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Solution

The fourth proportional to 209,488.80, 315,010.80 and 175,274.40 is: 263,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,488.80 : 315,010.80 = 175,274.40 : x
  2. Step 2: Convert to fraction form
    209,488.80/315,010.80 = 175,274.40/x
  3. Step 3: Cross multiply
    209,488.80x = 315,010.80 × 175,274.40
  4. Step 4: Simplify right side
    209,488.80x = 55,213,328,963.52
  5. Step 5: Solve for x
    x = 55,213,328,963.52/209,488.80
  6. Step 6: Final answer
    x = 263,562.20

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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.