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Finding the Fourth Proportional to 279,284.76, 385,401.51 and 151,960.41

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Solution

The fourth proportional to 279,284.76, 385,401.51 and 151,960.41 is: 209,699.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,284.76 : 385,401.51 = 151,960.41 : x
  2. Step 2: Convert to fraction form
    279,284.76/385,401.51 = 151,960.41/x
  3. Step 3: Cross multiply
    279,284.76x = 385,401.51 × 151,960.41
  4. Step 4: Simplify right side
    279,284.76x = 58,565,771,474.22
  5. Step 5: Solve for x
    x = 58,565,771,474.22/279,284.76
  6. Step 6: Final answer
    x = 209,699.13

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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.