Home / 212,032.28-318,048.63-99,630.08

Finding the Fourth Proportional to 212,032.28, 318,048.63 and 99,630.08

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Solution

The fourth proportional to 212,032.28, 318,048.63 and 99,630.08 is: 149,445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,032.28 : 318,048.63 = 99,630.08 : x
  2. Step 2: Convert to fraction form
    212,032.28/318,048.63 = 99,630.08/x
  3. Step 3: Cross multiply
    212,032.28x = 318,048.63 × 99,630.08
  4. Step 4: Simplify right side
    212,032.28x = 31,687,210,450.79
  5. Step 5: Solve for x
    x = 31,687,210,450.79/212,032.28
  6. Step 6: Final answer
    x = 149,445.22

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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.