Home / 260,805,547.20-391,208,320.80-79,029,105.60

Finding the Fourth Proportional to 260,805,547.20, 391,208,320.80 and 79,029,105.60

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Solution

The fourth proportional to 260,805,547.20, 391,208,320.80 and 79,029,105.60 is: 118,543,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,805,547.20 : 391,208,320.80 = 79,029,105.60 : x
  2. Step 2: Convert to fraction form
    260,805,547.20/391,208,320.80 = 79,029,105.60/x
  3. Step 3: Cross multiply
    260,805,547.20x = 391,208,320.80 × 79,029,105.60
  4. Step 4: Simplify right side
    260,805,547.20x = 30,916,843,696,101,876
  5. Step 5: Solve for x
    x = 30,916,843,696,101,876/260,805,547.20
  6. Step 6: Final answer
    x = 118,543,658.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.