Home / 279,711.40-386,000.58-152,386.60

Finding the Fourth Proportional to 279,711.40, 386,000.58 and 152,386.60

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Solution

The fourth proportional to 279,711.40, 386,000.58 and 152,386.60 is: 210,292.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,711.40 : 386,000.58 = 152,386.60 : x
  2. Step 2: Convert to fraction form
    279,711.40/386,000.58 = 152,386.60/x
  3. Step 3: Cross multiply
    279,711.40x = 386,000.58 × 152,386.60
  4. Step 4: Simplify right side
    279,711.40x = 58,821,315,984.23
  5. Step 5: Solve for x
    x = 58,821,315,984.23/279,711.40
  6. Step 6: Final answer
    x = 210,292.88

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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.