Home / 430,019.10-645,101.55-130,497.30

Finding the Fourth Proportional to 430,019.10, 645,101.55 and 130,497.30

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Solution

The fourth proportional to 430,019.10, 645,101.55 and 130,497.30 is: 195,768.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,019.10 : 645,101.55 = 130,497.30 : x
  2. Step 2: Convert to fraction form
    430,019.10/645,101.55 = 130,497.30/x
  3. Step 3: Cross multiply
    430,019.10x = 645,101.55 × 130,497.30
  4. Step 4: Simplify right side
    430,019.10x = 84,184,010,500.82
  5. Step 5: Solve for x
    x = 84,184,010,500.82/430,019.10
  6. Step 6: Final answer
    x = 195,768.07

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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.