Home / 212,385.72-318,400.02-142,050.36

Finding the Fourth Proportional to 212,385.72, 318,400.02 and 142,050.36

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Solution

The fourth proportional to 212,385.72, 318,400.02 and 142,050.36 is: 212,956.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,385.72 : 318,400.02 = 142,050.36 : x
  2. Step 2: Convert to fraction form
    212,385.72/318,400.02 = 142,050.36/x
  3. Step 3: Cross multiply
    212,385.72x = 318,400.02 × 142,050.36
  4. Step 4: Simplify right side
    212,385.72x = 45,228,837,465.01
  5. Step 5: Solve for x
    x = 45,228,837,465.01/212,385.72
  6. Step 6: Final answer
    x = 212,956.11

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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.