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Finding the Fourth Proportional to 253,671.47, 349,269.14 and 215,355.23

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Solution

The fourth proportional to 253,671.47, 349,269.14 and 215,355.23 is: 296,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,671.47 : 349,269.14 = 215,355.23 : x
  2. Step 2: Convert to fraction form
    253,671.47/349,269.14 = 215,355.23/x
  3. Step 3: Cross multiply
    253,671.47x = 349,269.14 × 215,355.23
  4. Step 4: Simplify right side
    253,671.47x = 75,216,934,899.83
  5. Step 5: Solve for x
    x = 75,216,934,899.83/253,671.47
  6. Step 6: Final answer
    x = 296,513.18

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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.