Home / 208,050,564.82-287,000,926.21-128,640,242.52

Finding the Fourth Proportional to 208,050,564.82, 287,000,926.21 and 128,640,242.52

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Solution

The fourth proportional to 208,050,564.82, 287,000,926.21 and 128,640,242.52 is: 177,456,229.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,050,564.82 : 287,000,926.21 = 128,640,242.52 : x
  2. Step 2: Convert to fraction form
    208,050,564.82/287,000,926.21 = 128,640,242.52/x
  3. Step 3: Cross multiply
    208,050,564.82x = 287,000,926.21 × 128,640,242.52
  4. Step 4: Simplify right side
    208,050,564.82x = 36,919,868,750,473,352
  5. Step 5: Solve for x
    x = 36,919,868,750,473,352/208,050,564.82
  6. Step 6: Final answer
    x = 177,456,229.37

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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.