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Finding the Fourth Proportional to 258,989,826.90, 388,484,740.35 and 258,989,826.90

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Solution

The fourth proportional to 258,989,826.90, 388,484,740.35 and 258,989,826.90 is: 388,484,740.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,989,826.90 : 388,484,740.35 = 258,989,826.90 : x
  2. Step 2: Convert to fraction form
    258,989,826.90/388,484,740.35 = 258,989,826.90/x
  3. Step 3: Cross multiply
    258,989,826.90x = 388,484,740.35 × 258,989,826.90
  4. Step 4: Simplify right side
    258,989,826.90x = 100,613,595,656,537,952
  5. Step 5: Solve for x
    x = 100,613,595,656,537,952/258,989,826.90
  6. Step 6: Final answer
    x = 388,484,740.35

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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.