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Finding the Fourth Proportional to 388,673,726.80, 583,010,590.20 and 101,459,390.80

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Solution

The fourth proportional to 388,673,726.80, 583,010,590.20 and 101,459,390.80 is: 152,189,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,673,726.80 : 583,010,590.20 = 101,459,390.80 : x
  2. Step 2: Convert to fraction form
    388,673,726.80/583,010,590.20 = 101,459,390.80/x
  3. Step 3: Cross multiply
    388,673,726.80x = 583,010,590.20 × 101,459,390.80
  4. Step 4: Simplify right side
    388,673,726.80x = 59,151,899,311,640,456
  5. Step 5: Solve for x
    x = 59,151,899,311,640,456/388,673,726.80
  6. Step 6: Final answer
    x = 152,189,086.20

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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.