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Finding the Fourth Proportional to 172,806.40, 242,628.80 and 172,806.40

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Solution

The fourth proportional to 172,806.40, 242,628.80 and 172,806.40 is: 242,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,806.40 : 242,628.80 = 172,806.40 : x
  2. Step 2: Convert to fraction form
    172,806.40/242,628.80 = 172,806.40/x
  3. Step 3: Cross multiply
    172,806.40x = 242,628.80 × 172,806.40
  4. Step 4: Simplify right side
    172,806.40x = 41,927,809,464.32
  5. Step 5: Solve for x
    x = 41,927,809,464.32/172,806.40
  6. Step 6: Final answer
    x = 242,628.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.