Home / 393,382,215.42-542,853,237.29-217,166,434.56

Finding the Fourth Proportional to 393,382,215.42, 542,853,237.29 and 217,166,434.56

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Solution

The fourth proportional to 393,382,215.42, 542,853,237.29 and 217,166,434.56 is: 299,681,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,382,215.42 : 542,853,237.29 = 217,166,434.56 : x
  2. Step 2: Convert to fraction form
    393,382,215.42/542,853,237.29 = 217,166,434.56/x
  3. Step 3: Cross multiply
    393,382,215.42x = 542,853,237.29 × 217,166,434.56
  4. Step 4: Simplify right side
    393,382,215.42x = 117,889,502,030,537,104
  5. Step 5: Solve for x
    x = 117,889,502,030,537,104/393,382,215.42
  6. Step 6: Final answer
    x = 299,681,829.55

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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.