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Finding the Fourth Proportional to 268,226.40, 402,339.60 and 143,810.40

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Solution

The fourth proportional to 268,226.40, 402,339.60 and 143,810.40 is: 215,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,226.40 : 402,339.60 = 143,810.40 : x
  2. Step 2: Convert to fraction form
    268,226.40/402,339.60 = 143,810.40/x
  3. Step 3: Cross multiply
    268,226.40x = 402,339.60 × 143,810.40
  4. Step 4: Simplify right side
    268,226.40x = 57,860,618,811.84
  5. Step 5: Solve for x
    x = 57,860,618,811.84/268,226.40
  6. Step 6: Final answer
    x = 215,715.60

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1.5x scale

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.