Home / 420,764.58-631,152.45-140,281.92

Finding the Fourth Proportional to 420,764.58, 631,152.45 and 140,281.92

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Solution

The fourth proportional to 420,764.58, 631,152.45 and 140,281.92 is: 210,424.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,764.58 : 631,152.45 = 140,281.92 : x
  2. Step 2: Convert to fraction form
    420,764.58/631,152.45 = 140,281.92/x
  3. Step 3: Cross multiply
    420,764.58x = 631,152.45 × 140,281.92
  4. Step 4: Simplify right side
    420,764.58x = 88,539,277,498.70
  5. Step 5: Solve for x
    x = 88,539,277,498.70/420,764.58
  6. Step 6: Final answer
    x = 210,424.74

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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.