Home / 208,284.78-287,430.75-117,640.92

Finding the Fourth Proportional to 208,284.78, 287,430.75 and 117,640.92

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Solution

The fourth proportional to 208,284.78, 287,430.75 and 117,640.92 is: 162,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,284.78 : 287,430.75 = 117,640.92 : x
  2. Step 2: Convert to fraction form
    208,284.78/287,430.75 = 117,640.92/x
  3. Step 3: Cross multiply
    208,284.78x = 287,430.75 × 117,640.92
  4. Step 4: Simplify right side
    208,284.78x = 33,813,617,866.29
  5. Step 5: Solve for x
    x = 33,813,617,866.29/208,284.78
  6. Step 6: Final answer
    x = 162,343.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.