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Finding the Fourth Proportional to 210,478.88, 290,461.88 and 114,987.17

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Solution

The fourth proportional to 210,478.88, 290,461.88 and 114,987.17 is: 158,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,478.88 : 290,461.88 = 114,987.17 : x
  2. Step 2: Convert to fraction form
    210,478.88/290,461.88 = 114,987.17/x
  3. Step 3: Cross multiply
    210,478.88x = 290,461.88 × 114,987.17
  4. Step 4: Simplify right side
    210,478.88x = 33,399,389,574.08
  5. Step 5: Solve for x
    x = 33,399,389,574.08/210,478.88
  6. Step 6: Final answer
    x = 158,682.85

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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.