Home / 213,623,999.80-320,435,999.70-141,820,415.80

Finding the Fourth Proportional to 213,623,999.80, 320,435,999.70 and 141,820,415.80

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Solution

The fourth proportional to 213,623,999.80, 320,435,999.70 and 141,820,415.80 is: 212,730,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,623,999.80 : 320,435,999.70 = 141,820,415.80 : x
  2. Step 2: Convert to fraction form
    213,623,999.80/320,435,999.70 = 141,820,415.80/x
  3. Step 3: Cross multiply
    213,623,999.80x = 320,435,999.70 × 141,820,415.80
  4. Step 4: Simplify right side
    213,623,999.80x = 45,444,366,714,742,680
  5. Step 5: Solve for x
    x = 45,444,366,714,742,680/213,623,999.80
  6. Step 6: Final answer
    x = 212,730,623.70

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1.5x scale

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.