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Finding the Fourth Proportional to 279,813.64, 386,142.24 and 152,488.93

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Solution

The fourth proportional to 279,813.64, 386,142.24 and 152,488.93 is: 210,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,813.64 : 386,142.24 = 152,488.93 : x
  2. Step 2: Convert to fraction form
    279,813.64/386,142.24 = 152,488.93/x
  3. Step 3: Cross multiply
    279,813.64x = 386,142.24 × 152,488.93
  4. Step 4: Simplify right side
    279,813.64x = 58,882,417,005.40
  5. Step 5: Solve for x
    x = 58,882,417,005.40/279,813.64
  6. Step 6: Final answer
    x = 210,434.41

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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.