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Finding the Fourth Proportional to 210,501.70, 290,496.45 and 115,014.40

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Solution

The fourth proportional to 210,501.70, 290,496.45 and 115,014.40 is: 158,722.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,501.70 : 290,496.45 = 115,014.40 : x
  2. Step 2: Convert to fraction form
    210,501.70/290,496.45 = 115,014.40/x
  3. Step 3: Cross multiply
    210,501.70x = 290,496.45 × 115,014.40
  4. Step 4: Simplify right side
    210,501.70x = 33,411,274,898.88
  5. Step 5: Solve for x
    x = 33,411,274,898.88/210,501.70
  6. Step 6: Final answer
    x = 158,722.11

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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.