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Finding the Fourth Proportional to 342,348.47, 472,281.68 and 221,528.80

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Solution

The fourth proportional to 342,348.47, 472,281.68 and 221,528.80 is: 305,606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,348.47 : 472,281.68 = 221,528.80 : x
  2. Step 2: Convert to fraction form
    342,348.47/472,281.68 = 221,528.80/x
  3. Step 3: Cross multiply
    342,348.47x = 472,281.68 × 221,528.80
  4. Step 4: Simplify right side
    342,348.47x = 104,623,993,205.50
  5. Step 5: Solve for x
    x = 104,623,993,205.50/342,348.47
  6. Step 6: Final answer
    x = 305,606.73

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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.