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Finding the Fourth Proportional to 279,855.36, 386,188.56 and 152,527.92

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Solution

The fourth proportional to 279,855.36, 386,188.56 and 152,527.92 is: 210,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,855.36 : 386,188.56 = 152,527.92 : x
  2. Step 2: Convert to fraction form
    279,855.36/386,188.56 = 152,527.92/x
  3. Step 3: Cross multiply
    279,855.36x = 386,188.56 × 152,527.92
  4. Step 4: Simplify right side
    279,855.36x = 58,904,537,784.60
  5. Step 5: Solve for x
    x = 58,904,537,784.60/279,855.36
  6. Step 6: Final answer
    x = 210,482.08

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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.