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Finding the Fourth Proportional to 279,341.58, 385,479.90 and 152,017.68

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Solution

The fourth proportional to 279,341.58, 385,479.90 and 152,017.68 is: 209,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,341.58 : 385,479.90 = 152,017.68 : x
  2. Step 2: Convert to fraction form
    279,341.58/385,479.90 = 152,017.68/x
  3. Step 3: Cross multiply
    279,341.58x = 385,479.90 × 152,017.68
  4. Step 4: Simplify right side
    279,341.58x = 58,599,760,084.63
  5. Step 5: Solve for x
    x = 58,599,760,084.63/279,341.58
  6. Step 6: Final answer
    x = 209,778.15

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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.