Home / 212,210.38-318,354.86-70,065.56

Finding the Fourth Proportional to 212,210.38, 318,354.86 and 70,065.56

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Solution

The fourth proportional to 212,210.38, 318,354.86 and 70,065.56 is: 105,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,210.38 : 318,354.86 = 70,065.56 : x
  2. Step 2: Convert to fraction form
    212,210.38/318,354.86 = 70,065.56/x
  3. Step 3: Cross multiply
    212,210.38x = 318,354.86 × 70,065.56
  4. Step 4: Simplify right side
    212,210.38x = 22,305,710,330.81
  5. Step 5: Solve for x
    x = 22,305,710,330.81/212,210.38
  6. Step 6: Final answer
    x = 105,111.31

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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.