Home / 286,904.50-430,425.87-89,912.50

Finding the Fourth Proportional to 286,904.50, 430,425.87 and 89,912.50

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Solution

The fourth proportional to 286,904.50, 430,425.87 and 89,912.50 is: 134,890.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,904.50 : 430,425.87 = 89,912.50 : x
  2. Step 2: Convert to fraction form
    286,904.50/430,425.87 = 89,912.50/x
  3. Step 3: Cross multiply
    286,904.50x = 430,425.87 × 89,912.50
  4. Step 4: Simplify right side
    286,904.50x = 38,700,666,036.38
  5. Step 5: Solve for x
    x = 38,700,666,036.38/286,904.50
  6. Step 6: Final answer
    x = 134,890.41

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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.