Home / 286,639.36-430,036.80-99,665.44

Finding the Fourth Proportional to 286,639.36, 430,036.80 and 99,665.44

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Solution

The fourth proportional to 286,639.36, 430,036.80 and 99,665.44 is: 149,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,639.36 : 430,036.80 = 99,665.44 : x
  2. Step 2: Convert to fraction form
    286,639.36/430,036.80 = 99,665.44/x
  3. Step 3: Cross multiply
    286,639.36x = 430,036.80 × 99,665.44
  4. Step 4: Simplify right side
    286,639.36x = 42,859,806,888.19
  5. Step 5: Solve for x
    x = 42,859,806,888.19/286,639.36
  6. Step 6: Final answer
    x = 149,525.20

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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.