Home / 258,458,334.02-387,690,876.39-85,935,145.22

Finding the Fourth Proportional to 258,458,334.02, 387,690,876.39 and 85,935,145.22

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Solution

The fourth proportional to 258,458,334.02, 387,690,876.39 and 85,935,145.22 is: 128,903,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,458,334.02 : 387,690,876.39 = 85,935,145.22 : x
  2. Step 2: Convert to fraction form
    258,458,334.02/387,690,876.39 = 85,935,145.22/x
  3. Step 3: Cross multiply
    258,458,334.02x = 387,690,876.39 × 85,935,145.22
  4. Step 4: Simplify right side
    258,458,334.02x = 33,316,271,763,043,716
  5. Step 5: Solve for x
    x = 33,316,271,763,043,716/258,458,334.02
  6. Step 6: Final answer
    x = 128,903,840.11

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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.