Home / 268,211.60-402,317.40-81,223.10

Finding the Fourth Proportional to 268,211.60, 402,317.40 and 81,223.10

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Solution

The fourth proportional to 268,211.60, 402,317.40 and 81,223.10 is: 121,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,211.60 : 402,317.40 = 81,223.10 : x
  2. Step 2: Convert to fraction form
    268,211.60/402,317.40 = 81,223.10/x
  3. Step 3: Cross multiply
    268,211.60x = 402,317.40 × 81,223.10
  4. Step 4: Simplify right side
    268,211.60x = 32,677,466,411.94
  5. Step 5: Solve for x
    x = 32,677,466,411.94/268,211.60
  6. Step 6: Final answer
    x = 121,834.65

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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.