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Finding the Fourth Proportional to 208,356.59, 287,526.19 and 122,314.20

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Solution

The fourth proportional to 208,356.59, 287,526.19 and 122,314.20 is: 168,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,356.59 : 287,526.19 = 122,314.20 : x
  2. Step 2: Convert to fraction form
    208,356.59/287,526.19 = 122,314.20/x
  3. Step 3: Cross multiply
    208,356.59x = 287,526.19 × 122,314.20
  4. Step 4: Simplify right side
    208,356.59x = 35,168,534,642.55
  5. Step 5: Solve for x
    x = 35,168,534,642.55/208,356.59
  6. Step 6: Final answer
    x = 168,790.13

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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.