Home / 212,210.50-318,248.12-70,029.28

Finding the Fourth Proportional to 212,210.50, 318,248.12 and 70,029.28

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Solution

The fourth proportional to 212,210.50, 318,248.12 and 70,029.28 is: 105,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,210.50 : 318,248.12 = 70,029.28 : x
  2. Step 2: Convert to fraction form
    212,210.50/318,248.12 = 70,029.28/x
  3. Step 3: Cross multiply
    212,210.50x = 318,248.12 × 70,029.28
  4. Step 4: Simplify right side
    212,210.50x = 22,286,686,704.95
  5. Step 5: Solve for x
    x = 22,286,686,704.95/212,210.50
  6. Step 6: Final answer
    x = 105,021.60

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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.