Home / 320,436,005.20-480,654,007.80-212,730,629.20

Finding the Fourth Proportional to 320,436,005.20, 480,654,007.80 and 212,730,629.20

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Solution

The fourth proportional to 320,436,005.20, 480,654,007.80 and 212,730,629.20 is: 319,095,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,436,005.20 : 480,654,007.80 = 212,730,629.20 : x
  2. Step 2: Convert to fraction form
    320,436,005.20/480,654,007.80 = 212,730,629.20/x
  3. Step 3: Cross multiply
    320,436,005.20x = 480,654,007.80 × 212,730,629.20
  4. Step 4: Simplify right side
    320,436,005.20x = 102,249,829,506,795,712
  5. Step 5: Solve for x
    x = 102,249,829,506,795,712/320,436,005.20
  6. Step 6: Final answer
    x = 319,095,943.80

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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.