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Finding the Fourth Proportional to 279,744.16, 386,042.08 and 152,420.80

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Solution

The fourth proportional to 279,744.16, 386,042.08 and 152,420.80 is: 210,338.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,744.16 : 386,042.08 = 152,420.80 : x
  2. Step 2: Convert to fraction form
    279,744.16/386,042.08 = 152,420.80/x
  3. Step 3: Cross multiply
    279,744.16x = 386,042.08 × 152,420.80
  4. Step 4: Simplify right side
    279,744.16x = 58,840,842,667.26
  5. Step 5: Solve for x
    x = 58,840,842,667.26/279,744.16
  6. Step 6: Final answer
    x = 210,338.06

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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.