Home / 391,293,282.81-539,977,465.89-215,077,511.07

Finding the Fourth Proportional to 391,293,282.81, 539,977,465.89 and 215,077,511.07

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Solution

The fourth proportional to 391,293,282.81, 539,977,465.89 and 215,077,511.07 is: 296,802,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,293,282.81 : 539,977,465.89 = 215,077,511.07 : x
  2. Step 2: Convert to fraction form
    391,293,282.81/539,977,465.89 = 215,077,511.07/x
  3. Step 3: Cross multiply
    391,293,282.81x = 539,977,465.89 × 215,077,511.07
  4. Step 4: Simplify right side
    391,293,282.81x = 116,137,009,397,507,008
  5. Step 5: Solve for x
    x = 116,137,009,397,507,008/391,293,282.81
  6. Step 6: Final answer
    x = 296,802,972.35

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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.