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Finding the Fourth Proportional to 657,235.60, 985,124.40 and 257,743.60

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Solution

The fourth proportional to 657,235.60, 985,124.40 and 257,743.60 is: 386,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,235.60 : 985,124.40 = 257,743.60 : x
  2. Step 2: Convert to fraction form
    657,235.60/985,124.40 = 257,743.60/x
  3. Step 3: Cross multiply
    657,235.60x = 985,124.40 × 257,743.60
  4. Step 4: Simplify right side
    657,235.60x = 253,909,509,303.84
  5. Step 5: Solve for x
    x = 253,909,509,303.84/657,235.60
  6. Step 6: Final answer
    x = 386,329.51

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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.