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Finding the Fourth Proportional to 581,462.40, 872,078.40 and 281,942.40

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Solution

The fourth proportional to 581,462.40, 872,078.40 and 281,942.40 is: 422,857.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,462.40 : 872,078.40 = 281,942.40 : x
  2. Step 2: Convert to fraction form
    581,462.40/872,078.40 = 281,942.40/x
  3. Step 3: Cross multiply
    581,462.40x = 872,078.40 × 281,942.40
  4. Step 4: Simplify right side
    581,462.40x = 245,875,877,084.16
  5. Step 5: Solve for x
    x = 245,875,877,084.16/581,462.40
  6. Step 6: Final answer
    x = 422,857.74

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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.