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Finding the Fourth Proportional to 922,269.80, 1,383,404.70 and 257,421.80

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Solution

The fourth proportional to 922,269.80, 1,383,404.70 and 257,421.80 is: 386,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,269.80 : 1,383,404.70 = 257,421.80 : x
  2. Step 2: Convert to fraction form
    922,269.80/1,383,404.70 = 257,421.80/x
  3. Step 3: Cross multiply
    922,269.80x = 1,383,404.70 × 257,421.80
  4. Step 4: Simplify right side
    922,269.80x = 356,118,528,002.46
  5. Step 5: Solve for x
    x = 356,118,528,002.46/922,269.80
  6. Step 6: Final answer
    x = 386,132.70

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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.