Home / 258,686,235.10-388,029,352.65-243,380,734.30

Finding the Fourth Proportional to 258,686,235.10, 388,029,352.65 and 243,380,734.30

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Solution

The fourth proportional to 258,686,235.10, 388,029,352.65 and 243,380,734.30 is: 365,071,101.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,686,235.10 : 388,029,352.65 = 243,380,734.30 : x
  2. Step 2: Convert to fraction form
    258,686,235.10/388,029,352.65 = 243,380,734.30/x
  3. Step 3: Cross multiply
    258,686,235.10x = 388,029,352.65 × 243,380,734.30
  4. Step 4: Simplify right side
    258,686,235.10x = 94,438,868,777,910,656
  5. Step 5: Solve for x
    x = 94,438,868,777,910,656/258,686,235.10
  6. Step 6: Final answer
    x = 365,071,101.45

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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.