Home / 212,947.40-319,421.10-159,803.30

Finding the Fourth Proportional to 212,947.40, 319,421.10 and 159,803.30

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Solution

The fourth proportional to 212,947.40, 319,421.10 and 159,803.30 is: 239,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,947.40 : 319,421.10 = 159,803.30 : x
  2. Step 2: Convert to fraction form
    212,947.40/319,421.10 = 159,803.30/x
  3. Step 3: Cross multiply
    212,947.40x = 319,421.10 × 159,803.30
  4. Step 4: Simplify right side
    212,947.40x = 51,044,545,869.63
  5. Step 5: Solve for x
    x = 51,044,545,869.63/212,947.40
  6. Step 6: Final answer
    x = 239,704.95

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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.