Home / 639,280.02-959,076.15-212,815.02

Finding the Fourth Proportional to 639,280.02, 959,076.15 and 212,815.02

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Solution

The fourth proportional to 639,280.02, 959,076.15 and 212,815.02 is: 319,274.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,280.02 : 959,076.15 = 212,815.02 : x
  2. Step 2: Convert to fraction form
    639,280.02/959,076.15 = 212,815.02/x
  3. Step 3: Cross multiply
    639,280.02x = 959,076.15 × 212,815.02
  4. Step 4: Simplify right side
    639,280.02x = 204,105,810,043.77
  5. Step 5: Solve for x
    x = 204,105,810,043.77/639,280.02
  6. Step 6: Final answer
    x = 319,274.50

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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.