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Finding the Fourth Proportional to 657,267.40, 985,220.70 and 357,113.80

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Solution

The fourth proportional to 657,267.40, 985,220.70 and 357,113.80 is: 535,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,267.40 : 985,220.70 = 357,113.80 : x
  2. Step 2: Convert to fraction form
    657,267.40/985,220.70 = 357,113.80/x
  3. Step 3: Cross multiply
    657,267.40x = 985,220.70 × 357,113.80
  4. Step 4: Simplify right side
    657,267.40x = 351,835,908,015.66
  5. Step 5: Solve for x
    x = 351,835,908,015.66/657,267.40
  6. Step 6: Final answer
    x = 535,301.02

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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.