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Finding the Fourth Proportional to 210,490.76, 290,101.48 and 159,381.38

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Solution

The fourth proportional to 210,490.76, 290,101.48 and 159,381.38 is: 219,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,490.76 : 290,101.48 = 159,381.38 : x
  2. Step 2: Convert to fraction form
    210,490.76/290,101.48 = 159,381.38/x
  3. Step 3: Cross multiply
    210,490.76x = 290,101.48 × 159,381.38
  4. Step 4: Simplify right side
    210,490.76x = 46,236,772,373.48
  5. Step 5: Solve for x
    x = 46,236,772,373.48/210,490.76
  6. Step 6: Final answer
    x = 219,661.77

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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.