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Finding the Fourth Proportional to 279,885, 386,245.98 and 152,567.64

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Solution

The fourth proportional to 279,885, 386,245.98 and 152,567.64 is: 210,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,885 : 386,245.98 = 152,567.64 : x
  2. Step 2: Convert to fraction form
    279,885/386,245.98 = 152,567.64/x
  3. Step 3: Cross multiply
    279,885x = 386,245.98 × 152,567.64
  4. Step 4: Simplify right side
    279,885x = 58,928,637,628.09
  5. Step 5: Solve for x
    x = 58,928,637,628.09/279,885
  6. Step 6: Final answer
    x = 210,545.89

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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.