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Finding the Fourth Proportional to 657,281.40, 985,241.70 and 357,127.80

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Solution

The fourth proportional to 657,281.40, 985,241.70 and 357,127.80 is: 535,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,281.40 : 985,241.70 = 357,127.80 : x
  2. Step 2: Convert to fraction form
    657,281.40/985,241.70 = 357,127.80/x
  3. Step 3: Cross multiply
    657,281.40x = 985,241.70 × 357,127.80
  4. Step 4: Simplify right side
    657,281.40x = 351,857,200,789.26
  5. Step 5: Solve for x
    x = 351,857,200,789.26/657,281.40
  6. Step 6: Final answer
    x = 535,322.01

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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.