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Finding the Fourth Proportional to 547,482.47, 821,225.64 and 168,400.65

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Solution

The fourth proportional to 547,482.47, 821,225.64 and 168,400.65 is: 252,601.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,482.47 : 821,225.64 = 168,400.65 : x
  2. Step 2: Convert to fraction form
    547,482.47/821,225.64 = 168,400.65/x
  3. Step 3: Cross multiply
    547,482.47x = 821,225.64 × 168,400.65
  4. Step 4: Simplify right side
    547,482.47x = 138,294,931,572.67
  5. Step 5: Solve for x
    x = 138,294,931,572.67/547,482.47
  6. Step 6: Final answer
    x = 252,601.57

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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.