Home / 286,977.76-430,468.80-99,988.96

Finding the Fourth Proportional to 286,977.76, 430,468.80 and 99,988.96

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Solution

The fourth proportional to 286,977.76, 430,468.80 and 99,988.96 is: 149,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,977.76 : 430,468.80 = 99,988.96 : x
  2. Step 2: Convert to fraction form
    286,977.76/430,468.80 = 99,988.96/x
  3. Step 3: Cross multiply
    286,977.76x = 430,468.80 × 99,988.96
  4. Step 4: Simplify right side
    286,977.76x = 43,042,127,624.45
  5. Step 5: Solve for x
    x = 43,042,127,624.45/286,977.76
  6. Step 6: Final answer
    x = 149,984.19

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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.