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Finding the Fourth Proportional to 385,239.60, 577,686.60 and 148,503.60

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Solution

The fourth proportional to 385,239.60, 577,686.60 and 148,503.60 is: 222,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,239.60 : 577,686.60 = 148,503.60 : x
  2. Step 2: Convert to fraction form
    385,239.60/577,686.60 = 148,503.60/x
  3. Step 3: Cross multiply
    385,239.60x = 577,686.60 × 148,503.60
  4. Step 4: Simplify right side
    385,239.60x = 85,788,539,771.76
  5. Step 5: Solve for x
    x = 85,788,539,771.76/385,239.60
  6. Step 6: Final answer
    x = 222,688.79

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1.5x scale

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.