Home / 280,293,752.12-386,749,278.75-156,515,384.12

Finding the Fourth Proportional to 280,293,752.12, 386,749,278.75 and 156,515,384.12

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Solution

The fourth proportional to 280,293,752.12, 386,749,278.75 and 156,515,384.12 is: 215,959,904.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,293,752.12 : 386,749,278.75 = 156,515,384.12 : x
  2. Step 2: Convert to fraction form
    280,293,752.12/386,749,278.75 = 156,515,384.12/x
  3. Step 3: Cross multiply
    280,293,752.12x = 386,749,278.75 × 156,515,384.12
  4. Step 4: Simplify right side
    280,293,752.12x = 60,532,211,921,689,208
  5. Step 5: Solve for x
    x = 60,532,211,921,689,208/280,293,752.12
  6. Step 6: Final answer
    x = 215,959,904.44

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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.