Home / 430,174.46-645,273.95-145,865.81

Finding the Fourth Proportional to 430,174.46, 645,273.95 and 145,865.81

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Solution

The fourth proportional to 430,174.46, 645,273.95 and 145,865.81 is: 218,802.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,174.46 : 645,273.95 = 145,865.81 : x
  2. Step 2: Convert to fraction form
    430,174.46/645,273.95 = 145,865.81/x
  3. Step 3: Cross multiply
    430,174.46x = 645,273.95 × 145,865.81
  4. Step 4: Simplify right side
    430,174.46x = 94,123,408,272.51
  5. Step 5: Solve for x
    x = 94,123,408,272.51/430,174.46
  6. Step 6: Final answer
    x = 218,802.87

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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.