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Finding the Fourth Proportional to 279,758.61, 386,066.97 and 152,434.17

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Solution

The fourth proportional to 279,758.61, 386,066.97 and 152,434.17 is: 210,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,758.61 : 386,066.97 = 152,434.17 : x
  2. Step 2: Convert to fraction form
    279,758.61/386,066.97 = 152,434.17/x
  3. Step 3: Cross multiply
    279,758.61x = 386,066.97 × 152,434.17
  4. Step 4: Simplify right side
    279,758.61x = 58,849,798,136.36
  5. Step 5: Solve for x
    x = 58,849,798,136.36/279,758.61
  6. Step 6: Final answer
    x = 210,359.20

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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.