Home / 462,100.12-693,216.30-142,279.05

Finding the Fourth Proportional to 462,100.12, 693,216.30 and 142,279.05

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Solution

The fourth proportional to 462,100.12, 693,216.30 and 142,279.05 is: 213,438.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,100.12 : 693,216.30 = 142,279.05 : x
  2. Step 2: Convert to fraction form
    462,100.12/693,216.30 = 142,279.05/x
  3. Step 3: Cross multiply
    462,100.12x = 693,216.30 × 142,279.05
  4. Step 4: Simplify right side
    462,100.12x = 98,630,153,831.11
  5. Step 5: Solve for x
    x = 98,630,153,831.11/462,100.12
  6. Step 6: Final answer
    x = 213,438.93

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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.