Home / 212,589.50-318,898.83-70,434.50

Finding the Fourth Proportional to 212,589.50, 318,898.83 and 70,434.50

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Solution

The fourth proportional to 212,589.50, 318,898.83 and 70,434.50 is: 105,656.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,589.50 : 318,898.83 = 70,434.50 : x
  2. Step 2: Convert to fraction form
    212,589.50/318,898.83 = 70,434.50/x
  3. Step 3: Cross multiply
    212,589.50x = 318,898.83 × 70,434.50
  4. Step 4: Simplify right side
    212,589.50x = 22,461,479,641.64
  5. Step 5: Solve for x
    x = 22,461,479,641.64/212,589.50
  6. Step 6: Final answer
    x = 105,656.58

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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.