Home / 390,775,018.50-539,277,238.26-214,561,472.22

Finding the Fourth Proportional to 390,775,018.50, 539,277,238.26 and 214,561,472.22

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Solution

The fourth proportional to 390,775,018.50, 539,277,238.26 and 214,561,472.22 is: 296,099,066.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,775,018.50 : 539,277,238.26 = 214,561,472.22 : x
  2. Step 2: Convert to fraction form
    390,775,018.50/539,277,238.26 = 214,561,472.22/x
  3. Step 3: Cross multiply
    390,775,018.50x = 539,277,238.26 × 214,561,472.22
  4. Step 4: Simplify right side
    390,775,018.50x = 115,708,118,175,801,312
  5. Step 5: Solve for x
    x = 115,708,118,175,801,312/390,775,018.50
  6. Step 6: Final answer
    x = 296,099,066.47

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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.