Home / 260,554,258.05-390,843,957.07-85,673,420.46

Finding the Fourth Proportional to 260,554,258.05, 390,843,957.07 and 85,673,420.46

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Solution

The fourth proportional to 260,554,258.05, 390,843,957.07 and 85,673,420.46 is: 128,514,263.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,554,258.05 : 390,843,957.07 = 85,673,420.46 : x
  2. Step 2: Convert to fraction form
    260,554,258.05/390,843,957.07 = 85,673,420.46/x
  3. Step 3: Cross multiply
    260,554,258.05x = 390,843,957.07 × 85,673,420.46
  4. Step 4: Simplify right side
    260,554,258.05x = 33,484,938,668,415,392
  5. Step 5: Solve for x
    x = 33,484,938,668,415,392/260,554,258.05
  6. Step 6: Final answer
    x = 128,514,263.86

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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.