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Finding the Fourth Proportional to 539,055.60, 807,611.40 and 257,953.20

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Solution

The fourth proportional to 539,055.60, 807,611.40 and 257,953.20 is: 386,464.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,055.60 : 807,611.40 = 257,953.20 : x
  2. Step 2: Convert to fraction form
    539,055.60/807,611.40 = 257,953.20/x
  3. Step 3: Cross multiply
    539,055.60x = 807,611.40 × 257,953.20
  4. Step 4: Simplify right side
    539,055.60x = 208,325,944,986.48
  5. Step 5: Solve for x
    x = 208,325,944,986.48/539,055.60
  6. Step 6: Final answer
    x = 386,464.67

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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.