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Finding the Fourth Proportional to 284,048.82, 391,985.88 and 154,987.26

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Solution

The fourth proportional to 284,048.82, 391,985.88 and 154,987.26 is: 213,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,048.82 : 391,985.88 = 154,987.26 : x
  2. Step 2: Convert to fraction form
    284,048.82/391,985.88 = 154,987.26/x
  3. Step 3: Cross multiply
    284,048.82x = 391,985.88 × 154,987.26
  4. Step 4: Simplify right side
    284,048.82x = 60,752,817,499.89
  5. Step 5: Solve for x
    x = 60,752,817,499.89/284,048.82
  6. Step 6: Final answer
    x = 213,881.60

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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.