Home / 288,584,779.49-398,236,326.44-156,422,938.45

Finding the Fourth Proportional to 288,584,779.49, 398,236,326.44 and 156,422,938.45

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Solution

The fourth proportional to 288,584,779.49, 398,236,326.44 and 156,422,938.45 is: 215,857,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,584,779.49 : 398,236,326.44 = 156,422,938.45 : x
  2. Step 2: Convert to fraction form
    288,584,779.49/398,236,326.44 = 156,422,938.45/x
  3. Step 3: Cross multiply
    288,584,779.49x = 398,236,326.44 × 156,422,938.45
  4. Step 4: Simplify right side
    288,584,779.49x = 62,293,296,378,673,688
  5. Step 5: Solve for x
    x = 62,293,296,378,673,688/288,584,779.49
  6. Step 6: Final answer
    x = 215,857,871.96

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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.