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Finding the Fourth Proportional to 279,384.93, 385,551.21 and 152,061.45

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Solution

The fourth proportional to 279,384.93, 385,551.21 and 152,061.45 is: 209,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,384.93 : 385,551.21 = 152,061.45 : x
  2. Step 2: Convert to fraction form
    279,384.93/385,551.21 = 152,061.45/x
  3. Step 3: Cross multiply
    279,384.93x = 385,551.21 × 152,061.45
  4. Step 4: Simplify right side
    279,384.93x = 58,627,476,041.85
  5. Step 5: Solve for x
    x = 58,627,476,041.85/279,384.93
  6. Step 6: Final answer
    x = 209,844.80

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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.