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Finding the Fourth Proportional to 318,641.92, 439,725.76 and 175,401.25

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Solution

The fourth proportional to 318,641.92, 439,725.76 and 175,401.25 is: 242,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,641.92 : 439,725.76 = 175,401.25 : x
  2. Step 2: Convert to fraction form
    318,641.92/439,725.76 = 175,401.25/x
  3. Step 3: Cross multiply
    318,641.92x = 439,725.76 × 175,401.25
  4. Step 4: Simplify right side
    318,641.92x = 77,128,447,961.20
  5. Step 5: Solve for x
    x = 77,128,447,961.20/318,641.92
  6. Step 6: Final answer
    x = 242,053.68

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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.