Home / 430,465.74-645,792.01-130,938.53

Finding the Fourth Proportional to 430,465.74, 645,792.01 and 130,938.53

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Solution

The fourth proportional to 430,465.74, 645,792.01 and 130,938.53 is: 196,436.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,465.74 : 645,792.01 = 130,938.53 : x
  2. Step 2: Convert to fraction form
    430,465.74/645,792.01 = 130,938.53/x
  3. Step 3: Cross multiply
    430,465.74x = 645,792.01 × 130,938.53
  4. Step 4: Simplify right side
    430,465.74x = 84,559,057,288.73
  5. Step 5: Solve for x
    x = 84,559,057,288.73/430,465.74
  6. Step 6: Final answer
    x = 196,436.21

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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.