Home / 279,795.12-386,117.28-152,470.68

Finding the Fourth Proportional to 279,795.12, 386,117.28 and 152,470.68

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Solution

The fourth proportional to 279,795.12, 386,117.28 and 152,470.68 is: 210,409.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,795.12 : 386,117.28 = 152,470.68 : x
  2. Step 2: Convert to fraction form
    279,795.12/386,117.28 = 152,470.68/x
  3. Step 3: Cross multiply
    279,795.12x = 386,117.28 × 152,470.68
  4. Step 4: Simplify right side
    279,795.12x = 58,871,564,241.35
  5. Step 5: Solve for x
    x = 58,871,564,241.35/279,795.12
  6. Step 6: Final answer
    x = 210,409.55

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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.