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Finding the Fourth Proportional to 279,476.96, 385,685.13 and 152,159.54

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Solution

The fourth proportional to 279,476.96, 385,685.13 and 152,159.54 is: 209,983.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,476.96 : 385,685.13 = 152,159.54 : x
  2. Step 2: Convert to fraction form
    279,476.96/385,685.13 = 152,159.54/x
  3. Step 3: Cross multiply
    279,476.96x = 385,685.13 × 152,159.54
  4. Step 4: Simplify right side
    279,476.96x = 58,685,670,037.21
  5. Step 5: Solve for x
    x = 58,685,670,037.21/279,476.96
  6. Step 6: Final answer
    x = 209,983.93

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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.