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Finding the Fourth Proportional to 208,681.62, 287,752.41 and 155,066.10

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Solution

The fourth proportional to 208,681.62, 287,752.41 and 155,066.10 is: 213,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,681.62 : 287,752.41 = 155,066.10 : x
  2. Step 2: Convert to fraction form
    208,681.62/287,752.41 = 155,066.10/x
  3. Step 3: Cross multiply
    208,681.62x = 287,752.41 × 155,066.10
  4. Step 4: Simplify right side
    208,681.62x = 44,620,643,984.30
  5. Step 5: Solve for x
    x = 44,620,643,984.30/208,681.62
  6. Step 6: Final answer
    x = 213,821.63

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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.