Home / 426,315.45-639,334.71-141,929.58

Finding the Fourth Proportional to 426,315.45, 639,334.71 and 141,929.58

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Solution

The fourth proportional to 426,315.45, 639,334.71 and 141,929.58 is: 212,848.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,315.45 : 639,334.71 = 141,929.58 : x
  2. Step 2: Convert to fraction form
    426,315.45/639,334.71 = 141,929.58/x
  3. Step 3: Cross multiply
    426,315.45x = 639,334.71 × 141,929.58
  4. Step 4: Simplify right side
    426,315.45x = 90,740,506,869.72
  5. Step 5: Solve for x
    x = 90,740,506,869.72/426,315.45
  6. Step 6: Final answer
    x = 212,848.27

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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.