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Finding the Fourth Proportional to 210,526.79, 290,523.51 and 115,031.43

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Solution

The fourth proportional to 210,526.79, 290,523.51 and 115,031.43 is: 158,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,526.79 : 290,523.51 = 115,031.43 : x
  2. Step 2: Convert to fraction form
    210,526.79/290,523.51 = 115,031.43/x
  3. Step 3: Cross multiply
    210,526.79x = 290,523.51 × 115,031.43
  4. Step 4: Simplify right side
    210,526.79x = 33,419,334,803.92
  5. Step 5: Solve for x
    x = 33,419,334,803.92/210,526.79
  6. Step 6: Final answer
    x = 158,741.49

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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.