Home / 315,524,743.20-473,287,114.80-145,655,431.20

Finding the Fourth Proportional to 315,524,743.20, 473,287,114.80 and 145,655,431.20

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Solution

The fourth proportional to 315,524,743.20, 473,287,114.80 and 145,655,431.20 is: 218,483,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,524,743.20 : 473,287,114.80 = 145,655,431.20 : x
  2. Step 2: Convert to fraction form
    315,524,743.20/473,287,114.80 = 145,655,431.20/x
  3. Step 3: Cross multiply
    315,524,743.20x = 473,287,114.80 × 145,655,431.20
  4. Step 4: Simplify right side
    315,524,743.20x = 68,936,838,787,597,896
  5. Step 5: Solve for x
    x = 68,936,838,787,597,896/315,524,743.20
  6. Step 6: Final answer
    x = 218,483,146.80

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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.