Home / 260,496,640.80-390,744,961.20-163,561,802.40

Finding the Fourth Proportional to 260,496,640.80, 390,744,961.20 and 163,561,802.40

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Solution

The fourth proportional to 260,496,640.80, 390,744,961.20 and 163,561,802.40 is: 245,342,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,496,640.80 : 390,744,961.20 = 163,561,802.40 : x
  2. Step 2: Convert to fraction form
    260,496,640.80/390,744,961.20 = 163,561,802.40/x
  3. Step 3: Cross multiply
    260,496,640.80x = 390,744,961.20 × 163,561,802.40
  4. Step 4: Simplify right side
    260,496,640.80x = 63,910,950,132,590,064
  5. Step 5: Solve for x
    x = 63,910,950,132,590,064/260,496,640.80
  6. Step 6: Final answer
    x = 245,342,703.60

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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.