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Finding the Fourth Proportional to 207,646.57, 286,554.95 and 122,762.89

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Solution

The fourth proportional to 207,646.57, 286,554.95 and 122,762.89 is: 169,414.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,646.57 : 286,554.95 = 122,762.89 : x
  2. Step 2: Convert to fraction form
    207,646.57/286,554.95 = 122,762.89/x
  3. Step 3: Cross multiply
    207,646.57x = 286,554.95 × 122,762.89
  4. Step 4: Simplify right side
    207,646.57x = 35,178,313,805.81
  5. Step 5: Solve for x
    x = 35,178,313,805.81/207,646.57
  6. Step 6: Final answer
    x = 169,414.37

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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.