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Finding the Fourth Proportional to 472,392,405.80, 708,588,608.70 and 239,940,112.40

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Solution

The fourth proportional to 472,392,405.80, 708,588,608.70 and 239,940,112.40 is: 359,910,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,405.80 : 708,588,608.70 = 239,940,112.40 : x
  2. Step 2: Convert to fraction form
    472,392,405.80/708,588,608.70 = 239,940,112.40/x
  3. Step 3: Cross multiply
    472,392,405.80x = 708,588,608.70 × 239,940,112.40
  4. Step 4: Simplify right side
    472,392,405.80x = 170,018,830,416,837,632
  5. Step 5: Solve for x
    x = 170,018,830,416,837,632/472,392,405.80
  6. Step 6: Final answer
    x = 359,910,168.60

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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.