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Finding the Fourth Proportional to 286,690.08, 430,140.24 and 99,755.04

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Solution

The fourth proportional to 286,690.08, 430,140.24 and 99,755.04 is: 149,669.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,690.08 : 430,140.24 = 99,755.04 : x
  2. Step 2: Convert to fraction form
    286,690.08/430,140.24 = 99,755.04/x
  3. Step 3: Cross multiply
    286,690.08x = 430,140.24 × 99,755.04
  4. Step 4: Simplify right side
    286,690.08x = 42,908,656,846.81
  5. Step 5: Solve for x
    x = 42,908,656,846.81/286,690.08
  6. Step 6: Final answer
    x = 149,669.14

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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.