Home / 420,937.12-631,411.15-140,454.37

Finding the Fourth Proportional to 420,937.12, 631,411.15 and 140,454.37

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Solution

The fourth proportional to 420,937.12, 631,411.15 and 140,454.37 is: 210,683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,937.12 : 631,411.15 = 140,454.37 : x
  2. Step 2: Convert to fraction form
    420,937.12/631,411.15 = 140,454.37/x
  3. Step 3: Cross multiply
    420,937.12x = 631,411.15 × 140,454.37
  4. Step 4: Simplify right side
    420,937.12x = 88,684,455,284.23
  5. Step 5: Solve for x
    x = 88,684,455,284.23/420,937.12
  6. Step 6: Final answer
    x = 210,683.38

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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.