Home / 430,155.65-645,191.54-130,638.83

Finding the Fourth Proportional to 430,155.65, 645,191.54 and 130,638.83

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Solution

The fourth proportional to 430,155.65, 645,191.54 and 130,638.83 is: 195,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,155.65 : 645,191.54 = 130,638.83 : x
  2. Step 2: Convert to fraction form
    430,155.65/645,191.54 = 130,638.83/x
  3. Step 3: Cross multiply
    430,155.65x = 645,191.54 × 130,638.83
  4. Step 4: Simplify right side
    430,155.65x = 84,287,067,911.50
  5. Step 5: Solve for x
    x = 84,287,067,911.50/430,155.65
  6. Step 6: Final answer
    x = 195,945.51

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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.