Home / 279,911.76-386,278.23-152,587.45

Finding the Fourth Proportional to 279,911.76, 386,278.23 and 152,587.45

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Solution

The fourth proportional to 279,911.76, 386,278.23 and 152,587.45 is: 210,570.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,911.76 : 386,278.23 = 152,587.45 : x
  2. Step 2: Convert to fraction form
    279,911.76/386,278.23 = 152,587.45/x
  3. Step 3: Cross multiply
    279,911.76x = 386,278.23 × 152,587.45
  4. Step 4: Simplify right side
    279,911.76x = 58,941,210,106.21
  5. Step 5: Solve for x
    x = 58,941,210,106.21/279,911.76
  6. Step 6: Final answer
    x = 210,570.69

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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.