Home / 420,970.02-631,250.36-140,392.50

Finding the Fourth Proportional to 420,970.02, 631,250.36 and 140,392.50

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Solution

The fourth proportional to 420,970.02, 631,250.36 and 140,392.50 is: 210,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,970.02 : 631,250.36 = 140,392.50 : x
  2. Step 2: Convert to fraction form
    420,970.02/631,250.36 = 140,392.50/x
  3. Step 3: Cross multiply
    420,970.02x = 631,250.36 × 140,392.50
  4. Step 4: Simplify right side
    420,970.02x = 88,622,816,166.30
  5. Step 5: Solve for x
    x = 88,622,816,166.30/420,970.02
  6. Step 6: Final answer
    x = 210,520.49

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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.