Home / 287,001.23-430,564.11-87,316.42

Finding the Fourth Proportional to 287,001.23, 430,564.11 and 87,316.42

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Solution

The fourth proportional to 287,001.23, 430,564.11 and 87,316.42 is: 130,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,001.23 : 430,564.11 = 87,316.42 : x
  2. Step 2: Convert to fraction form
    287,001.23/430,564.11 = 87,316.42/x
  3. Step 3: Cross multiply
    287,001.23x = 430,564.11 × 87,316.42
  4. Step 4: Simplify right side
    287,001.23x = 37,595,315,463.67
  5. Step 5: Solve for x
    x = 37,595,315,463.67/287,001.23
  6. Step 6: Final answer
    x = 130,993.57

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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.