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Finding the Fourth Proportional to 260,813,701.60, 391,220,552.40 and 168,980,696.80

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Solution

The fourth proportional to 260,813,701.60, 391,220,552.40 and 168,980,696.80 is: 253,471,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,813,701.60 : 391,220,552.40 = 168,980,696.80 : x
  2. Step 2: Convert to fraction form
    260,813,701.60/391,220,552.40 = 168,980,696.80/x
  3. Step 3: Cross multiply
    260,813,701.60x = 391,220,552.40 × 168,980,696.80
  4. Step 4: Simplify right side
    260,813,701.60x = 66,108,721,547,032,912
  5. Step 5: Solve for x
    x = 66,108,721,547,032,912/260,813,701.60
  6. Step 6: Final answer
    x = 253,471,045.20

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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.