Home / 286,639.11-430,036.43-99,665.19

Finding the Fourth Proportional to 286,639.11, 430,036.43 and 99,665.19

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Solution

The fourth proportional to 286,639.11, 430,036.43 and 99,665.19 is: 149,524.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,639.11 : 430,036.43 = 99,665.19 : x
  2. Step 2: Convert to fraction form
    286,639.11/430,036.43 = 99,665.19/x
  3. Step 3: Cross multiply
    286,639.11x = 430,036.43 × 99,665.19
  4. Step 4: Simplify right side
    286,639.11x = 42,859,662,004.55
  5. Step 5: Solve for x
    x = 42,859,662,004.55/286,639.11
  6. Step 6: Final answer
    x = 149,524.82

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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.