Home / 315,473,999.20-473,210,998.80-261,726,287.20

Finding the Fourth Proportional to 315,473,999.20, 473,210,998.80 and 261,726,287.20

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Solution

The fourth proportional to 315,473,999.20, 473,210,998.80 and 261,726,287.20 is: 392,589,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,473,999.20 : 473,210,998.80 = 261,726,287.20 : x
  2. Step 2: Convert to fraction form
    315,473,999.20/473,210,998.80 = 261,726,287.20/x
  3. Step 3: Cross multiply
    315,473,999.20x = 473,210,998.80 × 261,726,287.20
  4. Step 4: Simplify right side
    315,473,999.20x = 123,851,757,778,127,648
  5. Step 5: Solve for x
    x = 123,851,757,778,127,648/315,473,999.20
  6. Step 6: Final answer
    x = 392,589,430.80

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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.