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Finding the Fourth Proportional to 543,130.60, 814,368.62 and 243,557

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Solution

The fourth proportional to 543,130.60, 814,368.62 and 243,557 is: 365,188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,130.60 : 814,368.62 = 243,557 : x
  2. Step 2: Convert to fraction form
    543,130.60/814,368.62 = 243,557/x
  3. Step 3: Cross multiply
    543,130.60x = 814,368.62 × 243,557
  4. Step 4: Simplify right side
    543,130.60x = 198,345,177,981.34
  5. Step 5: Solve for x
    x = 198,345,177,981.34/543,130.60
  6. Step 6: Final answer
    x = 365,188.74

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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.