Home / 390,227,489.76-538,547,992.08-214,049,535.61

Finding the Fourth Proportional to 390,227,489.76, 538,547,992.08 and 214,049,535.61

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Solution

The fourth proportional to 390,227,489.76, 538,547,992.08 and 214,049,535.61 is: 295,407,039.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,227,489.76 : 538,547,992.08 = 214,049,535.61 : x
  2. Step 2: Convert to fraction form
    390,227,489.76/538,547,992.08 = 214,049,535.61/x
  3. Step 3: Cross multiply
    390,227,489.76x = 538,547,992.08 × 214,049,535.61
  4. Step 4: Simplify right side
    390,227,489.76x = 115,275,947,608,421,968
  5. Step 5: Solve for x
    x = 115,275,947,608,421,968/390,227,489.76
  6. Step 6: Final answer
    x = 295,407,039.83

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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.