Home / 320,436,009.20-480,654,013.80-212,730,633.20

Finding the Fourth Proportional to 320,436,009.20, 480,654,013.80 and 212,730,633.20

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Solution

The fourth proportional to 320,436,009.20, 480,654,013.80 and 212,730,633.20 is: 319,095,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,436,009.20 : 480,654,013.80 = 212,730,633.20 : x
  2. Step 2: Convert to fraction form
    320,436,009.20/480,654,013.80 = 212,730,633.20/x
  3. Step 3: Cross multiply
    320,436,009.20x = 480,654,013.80 × 212,730,633.20
  4. Step 4: Simplify right side
    320,436,009.20x = 102,249,832,705,795,536
  5. Step 5: Solve for x
    x = 102,249,832,705,795,536/320,436,009.20
  6. Step 6: Final answer
    x = 319,095,949.80

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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.