Home / 212,970.38-319,421.71-70,803.84

Finding the Fourth Proportional to 212,970.38, 319,421.71 and 70,803.84

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Solution

The fourth proportional to 212,970.38, 319,421.71 and 70,803.84 is: 106,194.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,970.38 : 319,421.71 = 70,803.84 : x
  2. Step 2: Convert to fraction form
    212,970.38/319,421.71 = 70,803.84/x
  3. Step 3: Cross multiply
    212,970.38x = 319,421.71 × 70,803.84
  4. Step 4: Simplify right side
    212,970.38x = 22,616,283,293.35
  5. Step 5: Solve for x
    x = 22,616,283,293.35/212,970.38
  6. Step 6: Final answer
    x = 106,194.50

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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.