Home / 430,027.72-645,066.18-130,518.07

Finding the Fourth Proportional to 430,027.72, 645,066.18 and 130,518.07

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Solution

The fourth proportional to 430,027.72, 645,066.18 and 130,518.07 is: 195,784.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,027.72 : 645,066.18 = 130,518.07 : x
  2. Step 2: Convert to fraction form
    430,027.72/645,066.18 = 130,518.07/x
  3. Step 3: Cross multiply
    430,027.72x = 645,066.18 × 130,518.07
  4. Step 4: Simplify right side
    430,027.72x = 84,192,791,223.21
  5. Step 5: Solve for x
    x = 84,192,791,223.21/430,027.72
  6. Step 6: Final answer
    x = 195,784.57

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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.