Home / 260,554,079.69-390,843,689.36-85,673,241.92

Finding the Fourth Proportional to 260,554,079.69, 390,843,689.36 and 85,673,241.92

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Solution

The fourth proportional to 260,554,079.69, 390,843,689.36 and 85,673,241.92 is: 128,513,995.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,079.69 : 390,843,689.36 = 85,673,241.92 : x
  2. Step 2: Convert to fraction form
    260,554,079.69/390,843,689.36 = 85,673,241.92/x
  3. Step 3: Cross multiply
    260,554,079.69x = 390,843,689.36 × 85,673,241.92
  4. Step 4: Simplify right side
    260,554,079.69x = 33,484,845,949,062,028
  5. Step 5: Solve for x
    x = 33,484,845,949,062,028/260,554,079.69
  6. Step 6: Final answer
    x = 128,513,995.98

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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.