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Finding the Fourth Proportional to 385,480.76, 577,888.56 and 185,526.05

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Solution

The fourth proportional to 385,480.76, 577,888.56 and 185,526.05 is: 278,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,480.76 : 577,888.56 = 185,526.05 : x
  2. Step 2: Convert to fraction form
    385,480.76/577,888.56 = 185,526.05/x
  3. Step 3: Cross multiply
    385,480.76x = 577,888.56 × 185,526.05
  4. Step 4: Simplify right side
    385,480.76x = 107,213,378,987.55
  5. Step 5: Solve for x
    x = 107,213,378,987.55/385,480.76
  6. Step 6: Final answer
    x = 278,129.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.