Home / 305,128.69-457,693.07-118,140.19

Finding the Fourth Proportional to 305,128.69, 457,693.07 and 118,140.19

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Solution

The fourth proportional to 305,128.69, 457,693.07 and 118,140.19 is: 177,210.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,128.69 : 457,693.07 = 118,140.19 : x
  2. Step 2: Convert to fraction form
    305,128.69/457,693.07 = 118,140.19/x
  3. Step 3: Cross multiply
    305,128.69x = 457,693.07 × 118,140.19
  4. Step 4: Simplify right side
    305,128.69x = 54,071,944,516.55
  5. Step 5: Solve for x
    x = 54,071,944,516.55/305,128.69
  6. Step 6: Final answer
    x = 177,210.29

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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.